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Thanks for posting Tom! Big thanks also for tuning the car, your work is top notch and amazes me everytime.
Just to touch base on exhaust issue, after tuning I head a rattle coming from under the car so the next day I took the exhaust off to find it was coming from the resonator area, after about 2 hours I was able to get this sucker out:
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It appears to be an internal baffle pipe or something that was in the resonator which has been robbing me of power since I got the car in 2011! There's still a wall inside the resonator that rises an inch to make the flow 2" so doesn't make much sense to put the exhaust back on until I can get that cut out of there..
Also Tom said the spool was a bit slow and from the day I got the turbo I haven't touched the preload on the actuator so I will put the blame on that (probably good that the spool is a little slow cuz I haven't been in a car faster than this one before lol).
Here are some pictures of the car:
Last edited by EvoIIIAj; Jul 27, 2015 at 05:32 AM.
Not going to bother with the preload for now because it feels awesome already to me. When I make some changes (FP Manifold etc) and get th exhaust sorted I'll preload it properly then!
It comes properly preloaded from FP. Or at least it should. My cars hits 20psi at 4k RPM with the stock short block. A 2.3 should easily be 500rpm faster..
It comes properly preloaded from FP. Or at least it should. My cars hits 20psi at 4k RPM with the stock short block. A 2.3 should easily be 500rpm faster..
Hmm I'll definitely look into why mine is spooling late then!
Get a magnus V5 i made 633/545 with the FP RED on ERs dynojet with a ER built 2.3.. i have the tomei 3" exhuast that necks down also..
I was actually looking into getting a Skunk 2 intake mani and FP race Manifold and having them both ported by Curt Brown. Have also been looking at that S90 throttle body.
Get a magnus V5 i made 633/545 with the FP RED on ERs dynojet with a ER built 2.3.. i have the tomei 3" exhuast that necks down also..
I prefer stock manifolds myself mainly due to fitment and they work well, but of course an aftermarket will always outflow even the most gutted stock intake manifold. That's very solid power.
Originally Posted by EvoIIIAj
Hmm I'll definitely look into why mine is spooling late then!
You would need to do your pull in 4th gear to compare with his spool. He has 4.11 Final drive, It loads the car up longer to give the turbo time to spool longer.
I did a car last week in person that had a wastegate flapper malfunction on a fp red, where the arm actually was out of position and needed twisted to close the flapper. After that it spooled 25psi by 4100-4200 in 3rd on 93. It was a evo IX MR 6spd.
Ethanol also helps spool over your 104oct sunoco as well. When I went from straight 93 in my car running the same timing and boost and just matching afr, I picked up 30whp and quicker spool just from 93 to e85, because ethanol cools the charge so much because its latent heat of evaporation is so much greater.
I would still check the preload on the flapper, but I have to say the exhaust probably has a lot to do with the spool as well like letsgetthisdone said.
I got my old setup 2.3, fp black, kelford 272, to hit 33psi by 3600-3700RPM in 3rd on stock final drive on e85, but it was preloaded so much i had to pressurize the actuator in order to slip the arm over the flapper.
They should/do come preloaded from FP, but sometimes you can get a little more out of it by tinkering with it. Just be careful not to preload to much, or you will introduce uncontrollable boost creep due to the flapper angle being to aggressive (almost closed when open)
Whenever I tune smaller turbos in person I sometimes question why I run the big one i do in my evo. I miss the super quick response and spool.
My car spooled the same in 3rd and 4th with the stock final drive. The orange line is 23psi at 4150ish on 91 octane. And that's not from any antics on the dyno to spool it faster. It did the same on the street.
Last edited by letsgetthisdone; Jul 30, 2015 at 01:32 PM.
I was comparing 3rd and 4th with stock vs 4.11 final drive. Of course it spools faster in 4th. The hub dyno did nothing weird because, as I said in my other post, it spooled the same on the street per data logs..
Ok so you think my personal car will spool the 6466 up by 4600RPM in 3rd 31-32psi on a standard OEM final drive then? because that's what it does on 4.11.
I would definitely doubt it. 4.11 in 3rd is closer to a standard final drive in 4th.
The gears longer. I tune 4.11 cars everyday, I see what they do first hand.
They always spool quicker in 3rd then a regular final drive in 3rd.
I'm simply stating what I have seen on my car. The 4.11 did not change boost threshold a lot if at all. It's hard to compare the characteristics of large open scroll 6466 that is begging for exhaust energy from our tiny 2.0L's to a tiny twin scroll housing on an fp red that gets overcome with back pressure at less than 6500rpm's. I'm going back to the stock final drive as soon as I get the gear set from TRE, so we'll see how it does.
Right now, on e85 in 3rd, my car does 20psi at 4k, 24.5psi at 4150 or so, 27 at 4250, 30 at 4350, 31.5 at 4460, and 32.5 at 4560 (peak boost). That's a street pull from 3,000-3,200ish rpm. I'll have to see if I have logs from the stock final drive. I deleted a bunch of stuff to clear up space on lappy, so Idk if I have them anymore...
Aaron just updated a thread where he tuned a built 2.3 on an SS fp red with R2 cams and stock final drive, the boost curve is about 200rpm's to the left of mine, and I have a ts housing.
The car in this thread is pretty close to the car Aaron posted, except it has a TS housing, not the SS housing. And its spooling up about the same, maybe a bit slower. The other difference is a ported head, which probably helps the other car. But the SS housing definitely isn't helping.
There is more then one variable that plays a roll in how much the final drive affects the gear for sure yes.
Off the top of my head 32 @ 4500 sounds right on for the 2.0L and red with s2 cams. (for no mivec :P)
You originally said "My car spooled the same in 3rd and 4th with the stock final drive"
I took that as "my car spools the same in 3rd as it does in 4th gear when i was on the stock final drive"
And I can 100% confirm thats not true. I never seen any evo spool the same in 3rd vs 4th ever.
Even stock turbos are affected.
on another note, we are working on AJ's car right now. Im having him verify preload, and were tuning it with the restriction out of the exhaust.
He did a pull without asking me first on just downpipe and it went 2 AFR points leaner to give an idea how restrictive the old exhaust was.
I been there before with restrictive exhausts on my cars. On my 2g dsm I had a apexi N1 and it necked down so bad you couldn't get a golf ball through the resonator area.
Last edited by tscompusa; Jul 30, 2015 at 02:51 PM.
Reason: mivec edit
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