KH504

iTrader: (3)

Mods list:
AI 243 226 heads
EPS 230 / 238 cam
ported fast 92
85 maf / 98 lid
underdrive pulley

exhasut before BBk header and y pipe with the factory 3" pipe and SLP dual dual exhaust.
dyno numbers: 434 rwhp uncorrected / 414 rwhp corrected

Kooks exhaust: 1 7/8" headers with the Kooks dual exhaust system.

dyno number: 466 rwhp uncorrected / 435 rwhp corrected only changing headers and exhaust system.

This is on Geoffs dyno at EPS.

screaminz847

Nice gains - was that retuned numbers or just bolted on?

KH504

iTrader: (3)

very little adjustment.

Blackpanther99

iTrader: (8)

Nice increase indeed.

Blackbird-WS6

iTrader: (15)

im sure on a stock car it wouldnt show that much in gains

either way very nice gains none the less and very good numbers for the mods and having a auto

dr_whigham

iTrader: (49)

32/21.....That's an awesone gain! Glad to see you ditch the 2.5" Y set up.
How's Geoff doing? Still busy as hell?

LeanPocket

iTrader: (6)

i gained 5 hp from pacesetter headers and y pipe with a cutout to kooks 1 7/8 and true duals with only bolt ons,

much flatter HP curve tho

sscamaroburn02

iTrader: (14)

No change in tuning was done? Hard to believe but nice numbers.

screaminz847

I wouldn't expect that much gain either on a stock car, but the gain from one header to the next is impressive - aren't BBK headers LTs themselves?

weldermike27408

nice....really nice....I'm still running 1-3/4" Kooks but am seriously considering a set of Kooks 1-7/8"-2" stepped on my GTO...may be overkill for now but a dry sleeved motor is on the drawing board in the next 18 months or so.

JakeFusion

iTrader: (7)

If you had heads/cam, I'm willing to bet it would have been much more (two results now show 20/15 and 30/20). I think if you went with the Kooks TDs you would have seen more. The TSP X-Pipe is pretty good in terms of merge, but I don't know how well the Sweet Thunders flow.

dr_whigham

iTrader: (49)

Valid point. The sweet thunders have an ID of 2.5" which IMHO is fine for a full bolt on / mild cam car. I myself am swapping them for a pair of Magnaflow bullets with a 3" core. If it gains me 5 at the wheels it will be worth it; if anything for sound alone.

KH, how's the throttle response now? "Feel" any different?

lemons12

iTrader: (71)

Im curious why this was even posted?
ANY mod you do with a cam in the car is going to show more gain. 1 7/8 would still yield higher numbers on a stock car.
Just wondering why it was brought up.

Sales@Tick

iTrader: (3)

If you're comparing your open cut-out numbers to the true duals you added afterwards, then that is why you only gained 5rwhp. I bet the closed cut-out numbers versus the TD's is a bigger increase.

Great numbers OP!!!

BTW what was the correction factor being used?

mesterious

iTrader: (3)

I wonder how much of a difference it would make to go from dual cutout's on the BBK 2.5 Y to 1 7/8 headers and true duals.

1998silverbird

iTrader: (29)

I know a buddy of mine dynoed his H/C/I through his SLP Dual Dual Catback and then he dynoed with his Cutout opened on the next pull and with the cutout opened he gained 20 some HP. I have the Dual Dual on my car and I will be installing a E Cutout soon and will be back on the dyno.

JakeFusion

iTrader: (7)

Either way, 466/435 is awesome. Once again an EPS cam and Ai heads are laying down awesome numbers. In an M6 car, I'd bet that'd be 480ish?

KH504

iTrader: (3)

I wont say it feels differnet but it sounds like I changed the motor in the car. LOL. I will be at the track on Saturday to see if it picked up. The car traped 120mph with the BBK.

KH504

iTrader: (3)

Not sure on the correction factor, I will need to asked Geoff.

lemons12

iTrader: (71)

How did the tone/quality/etc change? Just curious..