Stepping my IX up for 91/E85, looking for final preparation suggestions
 

Udate with thread summary:
Post 1: My baseline chart. Mod is Vishnu V400 (3" TBE with HFC, WGA bleeder to increase boost to 26 psi on 91 Octane gas), tuned by Shiv at TT. Added Injen hard pipe kit (LICP, UICP, turbo inlet pipe, and dry cone filter with MAF adaptor) afterwards. This is dyno run with leaking throttle body and you can see the dips when leak starts and where it gets worse.

Post 25: tuned for addition of: HTA71/RC1200cc (which are actually 1090cc@43.5 psi), AEM 320 LPH fuel pump, MAPerformance O2 housing with ceramic coating, self match ported exhaust manifold (honed all runners and curved collectors), AMS 3.5" FMIC, and stock turbo hotside, replaced throttle body seals with Works replacements.

Post 134: tuned for addition of GSC S2 cams with 5041 springs & titanium retainers. Also added Kiggly HLA PR and ARP headstuds for safety.

Post 187: Fuel pump rewire to keep oem 2 stage and give pump the full 13.8-14.2V from battery.

Post 288: my recommendations on installing head and setting timing belt.

Original post:

Getting ready for dual map tuning tomorrow. I just got my car back together last night. Started with Vishnu V400 with Injen pipes and filter. It baselined at 305 whp with leaky throttlebody.

https://cimg7.ibsrv.net/gimg/www.evo...23ecc4f82c.png

Since the baseline, I fixed the throttlebody leak and installed AMS FMIC (doesn't fit well with Injen pipes), HTA71, I ported the exhaust manifold and hotside myself while they were out, MAP O2 with ceramic coating (I matched the divider wall between wastegate and impeller ports with my turbo and rounded the flange where I can), crushed my stock DV, and added a spring to help the WGA stay closed. I did a leak test to 30 psi to 35 psi and tightened all my clamps (noticed that the AMS flanges are much softer and thinner than the Injen pipes because it dimpled where the tightening screws are - DOH!). For the tuning, I changed the oil and spark plugs.

Tomorrow, *local shop* will install 3 Port boost controller, RC 1200cc injectors, and AEM 320 lph fuel pump before tuning. Is there anything else I should do before the tuning?

I'll post the outcome once I get it.

Thanks!

What exhaust and intake are on the car? I forget what is included in the vishnu package as it hasn't been around in forever. Might be worth it to get a test pipe if you don't have one. Other than that setup should be fun. on E85 with the 71hta I made 450/400 at 30psi on my Evo IX. Car sure does rip. That was on the stock block and stock cams.

One of our local SoCalEvo's{thumbup}

Looks like youve got a lot of the bases covered. Didnt see what filter intake you have? Got to run the AEM or equivalent open intake to maximize the tune

Sorry guys, exhaust is Perrin. Has HFC and 3" DP (not sure if that's made by Perrin, but I doubt it). Intake is what I got from Injen SP1898 package.

https://cimg4.ibsrv.net/gimg/www.evo...aaf73038c5.jpg

Another 71hta :D Cant wait to see the results. Initially your list looks great.

I plan to always have a cat in the car. Don't need arterficial numbers. Too bad I won't know what my power is without the boost leak as baseline. When Shiv tuned it on TT dyno many years ago, I had him detune it from 315 to 305 whp for safety.

What's funny is I was supposed to have this tuned last week. I was assembling my exhaust and noticed mismatches on everything. I spent so much time getting the ports smooth and ended up doing a so-so job porting more to match the pieces. LOL.
Life always throws us curveballs!!

What is the torque limit for a completely stock IX engine (not even with ARP head bolts) on *local shop's* Dynapack? 430 ft-lbs?

From what I can find online, it looks like Dynapacks read 10-15% higher. Then I heard that Dynapack reads slightly lower than a nearby Dynojet. So I'm even more confused. :lol::lol::lol:

What made mine mate up really well is new couplers from siliconeintakes.com

Theyre dynapack def read higher when I was tuned by them

My problem is the J-pipe to LICP. They touch in coupler. The the other side has big gap to AMS FMIC. I can adjust so spacings are about same but angles won't line up with FMIC. It was so frustrating trying to get the couplers on so I ordered a 6" straight coupler. But the J-pipe still touches inside, so I'll probably make a small gap and deal with small misalignment with FMIC. Maybe my Injen was early version where they fit the E8 better. I'll check them out after tomorrow. Thanks!

I think 430 WTQ should be safe on their dyno then. When I ported my exhaust manifold, I honed #4 cylinder the least in hopes to keep the back pressure higher than the others. Hopefully, it's enough to prevent that cylinder from ingesting more air than the rest. Here's a picture of the other smoothed ports.

https://cimg9.ibsrv.net/gimg/www.evo...37d0a83351.jpg

Yeah so what I did is put the coupler on j pipe first, then to the intercooler, the ones from the website I stated are longer than the injen so it helps give a bit more wiggle room to the j pipe

Update: added WGA spring will be removed before tuning because if it changes tension over time and from heat, I may need a dual map retune (didn't think about the inconsistency tension rates).

I doubt mine will get to your level especially starting out at only 305 and keeping a cat on. 450/400 is a lot and I don't know if the stock WGA will hold 30 psi with only a 3 port (I didn't add tension by turning the tip down more than stock, which is 2.5 turns from neutral). My engine has 56k miles and has not been touched other than timing belt last month. We will see tomorrow night! Can't wait! {OMG}{OMG}{OMG}

I'm planning to go to Fontana on 25th to see what times I can get as a granny shifter. :lol::lol::lol:

Via my logs Im showing 450 hp 400tq. Im on a complete stock longblock at 28psi with a gtx3076r.

post the results!

I'm still at work. They told me I won't be on dyno until 3pm-ish, depending on others scheduled before me. I should be there by 5pm. This wait is killing me too! :lol:

My friend is there and they are just starting...

Can't hear the DV from behind. I crushed it down all the way on vise.

350 hp 23 psi on 91 octane gas, switching to e85 now.

Base line on e85, 408hp 23psi

425 whp is where my evo stops to be at safe level.

Final, 430hp, 400tq at 28psi tapering down to 24psi on e85

E85 + 3 gal of 91 = E70?

Here are the final graph for 91 and E85
https://cimg4.ibsrv.net/gimg/www.evo...1c51285932.png

Making the jam. I love my 71hta setup

very nice, congrats!

Here are the boost curves.
https://cimg4.ibsrv.net/gimg/www.evo...31886b02ce.png

Gunning it in 1st gear feels like tires want to spin. If I launch it, it may spin all the way through 1st.

The lag is exactly the same as my stocker with boost leak. Lol

Sounds like this might be your first car this fast haha {thumbup}

I've said it before and I'll say it again the 71hta is the absolute best turbo for a 2.0L motor.

You're right. This is my most powerful car yet.{thumbup}{thumbup}{thumbup}

I had a WRX with a big turbo...hated waiting to 4500-5000 RPM for the turbo to wake up. This is perfect match. Almost no lag and big power. {thumbup}{thumbup}{thumbup}

Next step is to see what times I'll get in 1/4 mile track. From what i can tell, high 11s to low 12s. I was doing 13.0 @ 108 mph with V400 that made 305 whp on TT's dynojet. I'll probably do 12.5. :lol:
{pcfreak}

Does your turbo taper to 24 psi at redline too? Or did my tuner set that? He said he lowered the boost in 4th and 5th gears. Guess I'll need to find my gauges or buy new ones to see what my turbo is doing. Lol

Oh cmon thats the first thing you should have done before tune, boost and wideband!

I bought the gauges 10 years ago. But since I drove about 5000 miles each year (1000 is from my brother borrowing it), I didn't spend the time. Now that it is much more critical, I will search my stuff to avoid buying them again. Lol

I bought steering column dual pod mounts but i don't like that location. I want to retain the stock appearance to avoid problems with theives and cops. Pilar mount is the worst since it's a cop magnet. LOL

Mine hits at 30psi and falls to 27.5 by 75rpm

Good to hear! So I have more boost available if I do more updates.{thumbup}

Look into a 02 dump. Makes more power by eliminating back pressure and makes more torque and spools the turbo quicker due to less backpressure

I'd love to have one, but cops love me and will pull me over for stupid things like one license plate light being out. I avoid standing out and giving them any reason to stop me.

Its only loud when you're above wastegate pressure. Cruising around town it's no different that stock/recirculated

My normal driving is off boost so it will always be loud. It's only quiet when I'm on boost, so it will draw attention. I remember by friend's eclipse and it was loud. If I do install, I'd plumb into resonator or a separate muffler. Lol

congrats. i love seeing other 71hta cars. last year i dyno 405 at 27psi. since then i have added COP setup and dropped my stock o2 housing for a muse o2 dump. I'm curious how much I have gained...

Probably quite a bit with the 02 dump :D

Okay, today, I was low on fuel. Searched for E85 station and nearest was 28 km away and my low fuel light comes on. Decided to get 91 at nearest gas station. Switched to 91 map and car had rough idle until E85 was cycled out (next time, I'll idle a few minutes on E85 map to flush out E85). Engine stalled after a few lights. I probably should have filled up closer to empty instead of when warning light first came on.

How does O2 dump make more power? I'm thinking it will allow wastegate to open slightly later without overboost, so we can get a little closer to preset boost before WGA opens. But that's probably not much more power. As for the DP, it will only take the exhaust turbine flows so flows won't be consistent. Doesn't that cause more backpressure since it is no longer flowing continuously?

Yeah you have to drain more than that for sure!
No restrictions {thumbup}

How many E85 miles can we drive after light turns on? On 91, we can get 30 more miles right? So E85 can get 20?

This is probably why my tuner cut boost at 23 psi on 91 gas. He didn't want people new to E85 to blow their engines when switching fuel.

Anyway, i drove about 40-50 miles and topped off on 91 to dilute what's left of E85. Car is running fine now. I was worried...:eek:

I noticed that E85 fuel makes the engine run smooth. It starts up gently unlike on 91, which roars when started. When I release the gas pedal, car bogs on 91. On E85, the engine bogs like it has no torque. It's so surprising that E85 made 80 more HP!

It eliminates back pressure thus making the turbine wheel work more efficiently

That makes sense. So it will have less pressure around 3800 RPM to redline. Do you know how much power?

Up to 30whp has been achieved when upgrading to a 02 dump

I'm drawing a blank on what and where in the cabin to install a boost gauge and maybe an EGT.

This is on my radar now. Just need to figure out a way to get it to pass smog.

Get a gruppe-s gauge pod

Gruppe-s site is gone? Website changed a few months back when I looked.

autometer makes em too

You'd have to find a used one, there is one for sale in the classifieds if I'm not mistaken

you are correct

I found Gruppe-s selling it on Amazon! $160!
I'm going to meet up to get from him. Now I need to find which gauges. I read reviews on Prosport and will avoid them. I'm thinking AEM or Defi. I think I'll move my radio to bottom.

Thanks guys!

I have defi's in my IX and AEM's in my X. Both are great, can't go wrong with either

I believe their website was shutdown, then have since moved to amazon.

They merged with Dynamic Autosports from Lake Forest. I'll meet up with him this week to buy his gauge cluster mount. Kit to move radio to bottom is about $90 on Amazon (these darn things add up so fast!). I'll look for used guages but if there isnt much difference to buy new, then I'll get new to avoid headaches. AEM UEGO is about $160. Not familiar with differences to more expensive versions. I'll start researching.
...and I realized I'll have to pull the exhaust manifold to get the bungs welded to cylinders 3 & 4. Ugh, I thought exhaust was done! :crap:

Got a new one from Gruppe-S in Santa Ana. Got 2 gauges and waiting for Ethanol analyzer gauge. Also waiting for radio relocation kit to bottom tray. Thanks guys for all your advice! Glad there are so many around always willing to help. {thumbup}

https://cimg7.ibsrv.net/gimg/www.evo...e1873df543.jpg

Gonna look really good :thumbup:

Thanks for the idea!{thumbup}{thumbup}

From what i can find from searches, i will install UEGO on DP right in front of my cat at 12 o'clock position. Anyone disagree?

3 o'clock position

For ease of removal and install?

Since muffler shop won't drill, I'll have to drill the hole myself, so it's not happening today since we're celebrating father's day today and tomorrow. (Happy Father's day to all dads out there)

I'll take off my DP during the week and have 2 bungs installed. One at each end so I can move the sensor closer to O2 for tuning days and in back for regular days.

Is this 3 o'clock facing front of car or facing back? It's a tighter spot facing front.

3 o'clock should face the passenger side of a USDM car

Here's an example
https://cdn.shopify.com/s/files/1/06...g?v=1448476542

AEM warns directly against this. Im sure it wouldnt hurt much but they say to not mount directly horizontal...


"On turbocharged engines the UEGO sensor must be installed after the
turbo charger, if not, the pressure differential will greatly affect the accuracy of
the unit. For accurate readings, the sensor must be mounted before catalytic
converters and/or auxiliary air pumps. To prevent collection of liquids between the
sensor housing and sensor element during the cold start phase, the installation angle
should be inclined at least 10° from horizontal with the electrical connection upwards."

I've always heard 3 o'clock and never have had an issue.

Just passing along AEMs instructions {thumbup}

Even the MAP downpipe on my Evo X has the wideband bung at 3 o'clock :confused:

As long as you drive a decent distance with each trip, the sensor should be fine. And if you have to drive short distances, then set your turbo timer to 5+ minutes. Lol

Ehhh, I've had the wideband on for a few years now and I've yet to have an issue with any amount of driving that I do.

Even the Perrin test pipe I have on my IX has a wideband bung (made it easy so I didn't have to add a bung into my downpipe). That bung is also at the 3 o'clock position

Guess condensation isn't a problem for you. Maybe it's because you're driving it hard to fully heat up your exhaust.

Isn't the stock rear O2 at 3 o'clock position in the stock cat?

Before I drive my car I let it warm up first.

And I have no idea, been forever since I've looked at or touched a catalytic converter for an Evo :lol:

:lol:

I just searched and saw that oem is at 11-12 o'clock position.

I've thought more about where to install my UEGO bung. I'm going to look for a location further up from my cat. Maybe somewhere near the oil drain plug if there is enough room. I think having it too close to cat will blend the readings because of the flow restriction caused by the cat. I want to see it change per cylinder as gases flow by. Too close to cat will blend the readings which is more of an averaged reading. If the lean conditions of one cylinder is blended with the others running rich, we won't know how lean that one cylinder is really running until it's too late. (You guys running a test pipe don't have this problem). Thoughts?

you must mount it BEFORE the cat, as said in my previous post quoting AEM

Yes. There's a spot a few inches before the flange with cat.

https://cimg9.ibsrv.net/gimg/www.evo...e61b539e0e.jpg

Facing front of car from under cat.

And there's another opening near front right inner cv joint.

https://cimg3.ibsrv.net/gimg/www.evo...7d6ecae9ec.jpg

My concern with being so close to CV joint is if that boot rips off, it could destroy the UEGO sensor. But it's usually the outter CV boot that rips first.

Good thing I looked under my car. I have an oil leak somewhere and need to track down source later. Also, I have no idea where the downpipe got its discoloration from. Wasn't there when I reunstalled it last time. Maybe coolant leaked on it?

Found my oil leak. The oil return line to oil pan was leaking with new gasket and factory torque. I torqued it to 130 #-in. Hopefully this stops the leak.

Here are my bungs.

https://cimg8.ibsrv.net/gimg/www.evo...c23b8e674c.jpg

This is the one I'll try first since I will always have a cat in my car since I'm in California.
https://cimg1.ibsrv.net/gimg/www.evo...23feee50dd.jpg


I will wire up the gauges when I get home later.

Also, after some research, I'm hooking up my boost sensor to the fpr solenoid from intake manifold.

https://cimg9.ibsrv.net/gimg/www.evo...97ff039d5c.jpg

If this is for a boost gauge then you just need to put the t-barb in the vacuum line that connects the IM to the fuel pressure regulator

I teed the vacuum line.

https://cimg2.ibsrv.net/gimg/www.evo...e4da120a0e.jpg

Boost sensor goes to right. Line wraps around and sensor is hiding behind for connector.

Need fuel connector to hook up ethanol analyzer. Boost and afr gauges looking good.
Need to shave the Gruppe-s cluster. My defogger and air recycle buttons are stuck and I need to cut out the old radio mount on right so I can rotate the gauge.

https://cimg9.ibsrv.net/gimg/www.evo...e5743068e0.jpg

I watched the afr gauge and at Wot, it dropped to 10, so E85 should be awesome. {thumbup}

I'm at Fontana's Street Legal Drags and there's no one here. Odd.

I wish I could have made it, but have morning plans.

Hey, make us EvO owners proud out there today{thumbup}

Joe:beer:

I won't granny shift 1-2, but will double clutch the rest of they way. Lol

Is this my competition? {OMG}{OMG}

https://cimg9.ibsrv.net/gimg/www.evo...cf243f6008.jpg

I see a GTR, about 5 hellcats, mustangs, AMGs, BMWs, muscle cars, and a DeLoean!


https://cimg7.ibsrv.net/gimg/www.evo...501b0e1984.jpg

LS3 engine

https://cimg6.ibsrv.net/gimg/www.evo...e16b957667.jpg

Nothing spectacular...

https://cimg2.ibsrv.net/gimg/www.evo...08374f73b9.jpg

For an extra 100 hp, I get +3 mph and 0.6 seconds faster.

Getting a little better. Lol

https://cimg8.ibsrv.net/gimg/www.evo...267ab7b935.jpg

I'm #1001.