I installed a FP 71HTA with the standard cover and 25psi. wastegate spring into a pretty stock 2003 Evo 8. I also installed an Invidia O2 housing, 3" downpipe, Mil.spec 200 cell cat. converter, FIC 850cc injectors, and a little shove to the spring in the Evo 9 cbv. I gained ~40rwhp with the modifications which I'm fine with. It was tuned at 26-27psi. and ~11.0afr's.



Comparison to the previous dyno tune which was with a HKS catback exhaust and a 3 port boost solenoid that FFTEC installed before tuning the car the first time.
Upgrading the intercooler and pipes would help as would a mild camshaft upgrade. I'm taxing the stock stuff right now at that boost level.
The previous dyno numbers on the following sheet are 258hp 249 ft-lbs though I did make a pull with 262 252 unfortunately it's not compared on this sheet.

 

good comparison, basically just turbo swap rest unchanged, and 40whp power increase. Nicely done, cams should wake that motor up.

 

Hey thanks bac. I liked most that the power curve is more responsive than it was stock. So I got an upgrade that spools about 100 rpm slower than the stock evo 8 turbo that I had previously but flows air more efficiently so power build up happens faster. I really like it.

 

I installed an ETS 3.5" intercooler along with a LICP to help keep my car healthy while participating in HPDE's which meant I should get an adjustment to the tune. Here is the dyno:
313 awhp and 305 ft-lb torque which is an improvement of 15-20hp from the initial dyno tune after the 71hta install. I had two dyno runs that put down 320awhp but I didn't bother to print them up because the boost wasn't fully adjusted yet. I'm very comfortable with the power the car makes and the tuner assured me the tune is very safe for what I like to do with the car and thats what I care about

 

just want to make sure but this was done on 91 pump correct? i've been keeping my eye on this turbo because i believe its just what im looking for but its so hard to compare different peoples dyno. I have heard that fftec does read a bit lower than most and since i'm stationed in travis afb which is about an hour north of san fran ill be going there for my mods anyways and i really would like to reach about 350whp+ with this turbo on their dyno. i guess what im asking is how much of a gain do you think it would get if you added say gsc s2 cams, 84mm cover, proper fuel mods and upped the boost

 

I haven't re-run my setup through VD yet (it's all I have access to) but I have exactly the setup you just described plus some odds and ends and an S1 intake came instead of an S2. Stock IM/TB. VD showed 405 awhp if memory serves on 26 psi last fall. 93 octane gas. I was at 380 prior to the cams, and was about 348 before that with the only mods added being the 71HTA, ported O2 housing, and ported exhaust manifold. It's a *fantastic* turbo IMO. Spools as quickly as stock and is good for 15-20% more power (or at least the potential to do so).

 

The biggest difference I see between your set-up and the one im shooting for is mainly 91 vs 93 I hate being in cali because no 93 and the closest e85 is about 15-20 miles out of my way so would like to stay on pump.