2003 Evo 8

Mods:

STEVO8 Spec ported BBK Full turbo
STEVO8 Spec ported Exhaust mani & Intake mani
Kelford 272's
Blox cam gears -2/-4
Forge WGA
Tomei BOV
AEM intake tube W/Perrin filter & vibrant maf adapter
ETS uicp
AMS licp
Perrin fmic
Milspec 65mm TB
AMS fuel rail
RC1200cc injectors
Titek V1 O2 housing
megan 3" DP
testpipe
3" catback with 16" resonator & muffler delete
Zeitronix Wideband
GM 3port boost solenoid using ECU-controlled boost
Stock motor
Stock MAF
Stock ECU

GST Motorsports custom dyno tune
Tephra V5 map switching (EcuFlash)
91 oct / E85 maps

This Evo 8 made great power for our dyno. Highest stock motor BBK Full on E85 on our dyno to date. Weighs just a little over 3000lbs as well so it's a quick one.

445 whp / 394 wtq on E85 (28.5 psi)

369 whp / 326wtq on 91 oct (25 psi)

+76 whp / 68 wtq gain from 91 to E85!



Here is a overlay of the BBK Full on E85 and a ported stock Evo 9 turbo on E85 (same car):

 

Bbk ftw!!!!

 

awesome again bryan.

why dont you come tune here? then I can do what I do best, ship packages LOL LOL!

cb

 

Dont get crazy.. I already have to drive two+ hours for him to tune my car.. I dont wanna have to drive across the country(although I still would)..


Thanks to both of you guys for awesome service. I think of you guys every time I break loose in third gear as Im pulling away from Z06's..

 

AWEsome results!

 

nice numbers.

 

Thats 1 strong evo 8

Great job to both bryan & steve.

How well is the bbk holding boost? Can you post a boost plot?

 

Sexeh, and awesome peak numbers and killer powerband!

Is timing and/or boost a bit low in the area around boost onset? Kinda weird to see torque go up and then slowly rise like that, definitely safe/nice on the stock bottom-end though

Nice work as always bryan.

 

I know bryan had mentioned to me on a couple of the cars recently he had been tapering the boost and tune so it didn't spike the torque... so it doesnt break things

Pretty smart

cb

 

Extremely nice power band! That is a really nice/smart torque curve Bryan. Nice work.

 

But I heart torque! 400wtq @~4000rpm = yummy.

 

Why hold the torque back so far compared to the stock turbo? That car must feel really weak below 5k RPM compared to when it was on the stock turbo.

 

Me too and we ran it that way for a while but now I no longer have a daily driver so I gotta make sure the Evo lasts until I can pick something else up. Really I don't notice the lack in tq though down there. The car weighs 2980lbs with a full tank so I moves alright since I only see sub 4k when first getting on the gas. Also if anything it helps with traction in first through thrid which it still has major issues with.

 

Not at all. I'm on 285 wide advan ADO7's and it still spins all four in first and second roll ons. Plus now it makes 70whp more out at the top end so if it gets spinning in 2nd it continues to spin. The stock turbo tune was a ***** out tune at around 31/32psi to see where we could push the stock turbo to(my car was the highest hp stock turbo VIII on this dyno). This tune is a nice street tune at 28.5psi since it's my daily driver.

 

Good comments from the owner, thanks man!