BBK headers and y pipe to Kooks 1 7/8 and dual exhaust
#1
BBK headers and y pipe to Kooks 1 7/8 and dual exhaust
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.
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.
Last edited by KH504; 01-19-2013 at 08:27 AM.
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#9
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?
#10
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.
#11
Super Hulk Smash
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.
#12
The Scammer Hammer
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?
KH, how's the throttle response now? "Feel" any different?
#16
TECH Regular
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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.
#18
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?
KH, how's the throttle response now? "Feel" any different?