Blue04

Thats true, but a good tune will really help fix a lot of that. Most of the difference after the tune is just perception and a change in throttle response. You can't negate ALL the extra piping but it really doesn't bother the overall setup considering the big time improvement in timing and consistency. I was able to improve throttle response some by going to a blow-thru maf.

mofoSTI

If my STI doesnt sell I will seriously concider buying a FP green kit through you guys after you have done all the testing for me. I have played with a lot of turbo options, but didnt want to be dissapointed with what I got only to have more down time and out more money. I will let you do the work for me.


thanks

EvoRecordSetter

get a better WG spring or do what ever you do to keep that boost holding !! i hate losing peak power!

AutoMotoSports

iTrader: (42)

In the midst of our very chaotic move we were able to get my car on the dyno and finally test this bad little boy. The results were very nice and we are really impressed with the turbo. The car is now making 75 more WHP at Redline on pump gas!


On with the test

The Vehicle: 2007 Subaru Sti

Modifications:

AMS Custom Catback
Turbo XS Downpipe
AMS Test Pipe
AEM Cold Air Intake
Vibrant Header with up-pipe
Deatschwerks 850CC top feed injectors
Walrbo Fuel Pump
Forced Performance FPGreen with an 8cm turbine housing and 2.4" Inlet
Forced Performance High PSI internal wastegate actuator

STOCK TOP MOUNT INTERCOOLER

pump Gas
21 Psi tapering to 18psi
Mid to low 11's AFR's


The First graph here is just the numbers. Here is what she did last night on the dyno. we are pretty impressed!



Now here is that same graph in STD Correction for those that are used to using the "Standard" Correction factor



And last but not least here is the HP curve outlined over the tune with the stock tubro. All that was changed was the FPGreen and the fuel modifications to support it. Look at the HP increase at redline!!!



All in all we are very happy with the results and considering the spool time we will deffinetely be recomending this turbo to our subaru customers.

Next on the modification path is to try this same combination with our AMS Top Mount Intercooler, Remove the Tumbers, Try an FP 3" Cover and toss an External Wastegate actuator on it. Oh, and of course throw some real gas at it

We think with some better boost control and a little less heat soak we can squeeze close to 400whp out of this little bolt on turbo.

Eric Gaudi
Sales Manager
AMS Performance

Tom W

Nice numbers Eric, can't wait to see what you do next

PsiFiSRT4

nice numbers for sure. that FP Green is no slouch of a turbo either. I just saw a thread the other day a guy made somewhere around 450whp on that turbo...

Blitz

iTrader: (11)

Very nice, but is there any noticeable sacrifice in low-end torque? It seems like there may be from the graph, but I'm no expert.

AutoMotoSports

iTrader: (42)

torque doesn't hit as early as it did before on the tiny VF43 but the car is WORLDS faster and the turbo is very responsive. no complaints at all

I can't wait to get this to the track and then to road course

Eric

JRB_EVO

iTrader: (6)

Looks like that is a mean machine now Eric, good luck with everything!!!

Take it to the track and do some runs, I bet she is begging for it!!!

dxbevo9

iTrader: (6)

nice....
wish they sold the sti here in the middle east...it would make a great daily driver...

AutoMotoSports

iTrader: (42)

The did pretty well, with the stock Top mount, Stock BOV and Stock Clutch the car went 11.7 @116 on saturday

JRB_EVO

iTrader: (6)

Those are excellent numbers Eric!!! Those numbers were on pump gas right???

AutoMotoSports

iTrader: (42)

a little bit of race gas but nothing above what 100 octane would do. She spiked to 24 but fell to 19

JRB_EVO

iTrader: (6)

Very very nice!!! I like that number 11.7 @116, I think I have just set a new goal for my IX, hahaha!!!

I know you (AMS) and my wallet will make it happen, haha!!!

mofoSTI

Is there a video of subaru running the ams exhaust on the dyno?