Current tune - 310-316 whp
Baseline - 250-253 whp

Mods:
Drop-in filter
UICP
FMIC
Catback exhaust

MBC was removed for the tune.

Prior to this session, I dyno'd 229 whp with everything above except the FMIC.

The car pulls very hard up top and is very smooth. I've gotta thank Pete for spending quite a few hours tuning the car. I do have a P1235 CEL code which he's aware of and he's working on it. I'm sure one of the tables just needs to be tweaked. I believe it has something to do with the throttle position and the rate-of-change of the MAF readings.

 

Nice numbers!

 

I'm assuming you don't have a works catback exhaust do you? In anycase, great numbers!

 

Very nice numbers for your mods.

 

Oh, here's the details on the mods.

Ralliart Drop-in filter
Nisei UICP
ETS 3.5" Intercooler
Greddy Ti-C exhaust

I'm thinking the cat is holding the car back. I'd like to get a 3" hi-flow cat or test pipe and then remove the taper in the Greddy. This will do for now.

 

I think you are right with the CAT being a restriction, however I thing the Turbo Outlet is also pretty restrictive.... This thread has some good comparison photos between Stock and one companies planned improvement:

https://www.evolutionm.net/forums/sh...t=AMS+downpipe

 

nice #s.... yeah im deffinitly waiting for AMS's DP

 

Yeah, I agree with you guys. The stock O2 housing looks really restrictive. The AMS DP looks nice. Release that freaking thing already. Actually, that piece looks difficult to fabricate. I also heard that it may be better to cast the upper section due to the excessive heat coming from the the turbo. The lower section can be stainless but upper - don't know.

 

I took my car to Speed Element to see how the Works tune would fare on their Dynodynamics dyno. I'm more familiar with what those numbers mean. My STi put down 260 whp with a TBE and a tune on a different Dynodynamics dyno. It may not be relevant but what the heck.




Interestingly there's a slight dip in the boost which I didn't see in the Works dyno. I believe this dip is real because I do feel it in on the road.

Let me rephrase that. It does look like you see a dip in the torque curve but on the boost curve, I don't see the dip. Maybe the Works boost gage isn't as sensitive. Strange.