Just went back to the track yesterday after running a 12.07@113 last week at the shootout hoping to crack into the 11's. Well the track wasnt prepped and I only got one good pass, the first pass of the day pulled a 1.67 60ft and went 12.08@113. Throughout the rest of the day more and more water must have got dragged up to the line and I spun the tires on every other run getting 1.89 60 fts countersteering through 1st gear while the tires spun away running 12.3-12.4's but all at 113 mph. Every pass I made regaurdless of ET is 113 mph! Im just wondering what should be my next mod, I want 11s so bad now with this 12.07 run, but I think I need to make a little more power to get there, should be running at least 114 I believe to hit 11.9's. All runs were on c16 race gas with the stock turbo maxed out. Temps were around 80-85. Mods are in my sig. Still on stock IC, pipes, intake pipe, injectors, etc. Car weighs 3375 with me in it. What next???

 

Blue bottle = you going 11.6 to 11.5 and 118-120mph. Best $550 you will ever spend

 

Hey Nate,

Yeah I am seriously considering doing just that, have been for a while, I just did my headstuds last week so that was the big thing that was holding me back from getting the nitrous. But theres a few more concerns I have about it. One is do I need bigger injectors, the other is how can I get the nitrous to turn on in 2nd gear cause Im having enough trouble as it is getting traction in 1st without it even dropping the tire pressure to 20 psi. Also, is it safe without reducing ignition timing and where do you tap the fuel source for the nitrous system from on the Evo?

How come you didnt come to Slowbaru ownage day last week?

 

Try an LICP and/or some cooler weather. You will hit 114 when the temps drop to 70 or below.

When you say the turbo is maxed, does this mean you are running wide open to 28psi or what? Also, what do your logs look like in 4th gear when on C16? I assume you're pulling out a lot of fuel with the C16 while cranking up the boost, but I am curious what your AFRs and timing look like at the end of the track...

 

What boost were you running? My car was stuck at that trap to for basically the last three races. Also what was your afr? I usually tune for 12.2 but last time I went out I only ran 11.8 afr's. Pretty hot out.

Id recommend afr's of around 12.2-12.5 with c16. Thats what Im gonna run on the 11th of sept. Hoping for 11.6

 

When I say the turbo was maxed I mean I tightened the hallman all the way, my boost gauge is apparently reading wrong however cause I know there is no way the stock turbo can hit 35 psi on a spike, although thats what my gauge said. So figure 28 psi spike holding 21 to redline. I pulled out about 20% give or take on the AFC across the board on the C16 on top of my dynoflash tune, about 17% from 7000+. I dont have a wideband yet, just a pocketlogger for logging data. My AFRs on the narrowband were .96 in the midrange and .94 at redline, timing in 4th gear was building from 12 degrees to 18 degrees in the top of 4th. I tried to lean it out a little more but I would get a degree of timing pulled out around 6300 rpm then it was put back in as the revs went up, so I richened it up slightly to keep the timing curve smooth. Intake air temps at top of 4th gear were around 95 degrees, beginning of the run they were 129. With no tuning on the AFC and just the dynoflash I was getting 1.0 afrs at redline and the same timing. I feel the ecu isnt giving me enough timing, shouldnt it be getting above 20?

I thought of the LICP but if Im gonna do that Id rather get the whole Buschur deluxe FMIC that comes with it, funds arent allowing for that right now after my recent unexpected clutch replacement. I guess at this level theres alot of stuff I should be getting, like a UTEC, wideband, FMIC and piping, etc etc, but alot of people seem to be running 11s with less then I have, and I know its not my driving.

 

Yeah, that's interesting. .94-.96 means you were still quite rich, because that's around 10.9-11.3. Not only is that rich for 93, but it's an entire point below where you want to be on C16. Now, of course you don't want any timing being pulled, but when I lean out on the S-AFC and race gas, I am getting a linear timing advance that peaks at 21-22 after 7k. 18 isn't enough...that's definitely holding you back on mph. I would try working out that bug, but wideband would definitely help...

 

How much boost were you running on your 12.1 run? I know the 05's are a little more aggresivly tuned then 03's, but I have the dynoflash so I thought that would make up for it. The only thing I can think of is maxing out the turbo is creating too much heat on the spike causing some knock and the timing being pulled at that spot, when I shift Im usually at 5800 in the beginning of each gear, by the time 6300 comes around the turbo is most likely at its peak then falling off from there, only reason I see for my getting that 1 degree pulled out at that spot when I tried to go leaner. I might try to just log some pump gas pulls at low boost just to see what kind of timing Im getting on this dynoflash, if it goes over 20 then Id have to assume Im getting some knock on the C16 at high boost and that is whats holding back the advance, even though the curve is continuous it might not be ramping up the timing as much as it would without any knock activity. And yes I definetly need a wideband, it would make this alot easier.

Oh one other thing, is it at all possible my gauge is accurate and Im getting a 35 psi spike that Im assuming is only 28?? Didnt think the 16g could make nearly that much boost

 

Right around 23-24psi steady on the 12.1 run. By steady, I mean it hits and sticks right when I shift to 4th (I only look in 4th), but then it naturally tapers off after 6500 to below 21psi...

 

Thats wierd, I think next time I will try to set the boost at 24-25 and see if I get some more timing, the thing is the car feels a ton faster with the boost turned all the way up, but thats mostly the big hit of torque on the spike, so I should stop tuning boost by the butt dyno aparently

 

Stock bov ? If so i bet she leaking , bad . Have you done a presure test lately ?

 

I would sugest you call Buschur Racing and get the $5 race chip - that will get you into the 11's - keep up the great work

 

Al, Can you explain what the chip does that would make that happen? Sounds awesome if its only $5 and would add that much power. Thanks

 

Just try it at the track and you will find another 2 mph

 

Is this a joke? Im sure buschur will laugh when I ask for the $5 chip thats going to give me 2mph at the track