Disappointing VR Ported FAST92 Results
Disappointing VR Ported FAST92 Results I recently put down 443whp and 408tq with a TV2 cam, stock ls6 intake and AI 226cc heads. To finalize the build I had Vengeance Racing port my FAST92 to squeeze every last bit out of my combo.
The port work by Vengeance looks amazing... No complaints about their work whatsoever... Im just very disapointed that I only picked up 10whp with the swap... What does everyone think?
My friend with the a similar build only picked up 9whp from an unported FAST92 swap and a TV2 cam...
New parts for latest tune:
VR Ported FAST92
NW 92mm TB
FTP 98mm lid
85mm MAF
Mods before:
Torquer v2 cam
Stock ls6 intake
TSP 1 3/4 LT headers
TSP ORY
Powerbond UDP
Ported stock TB
AI 226cc heads
**443whp and 408tq
The port work by Vengeance looks amazing... No complaints about their work whatsoever... Im just very disapointed that I only picked up 10whp with the swap... What does everyone think?
My friend with the a similar build only picked up 9whp from an unported FAST92 swap and a TV2 cam...
New parts for latest tune:
VR Ported FAST92
NW 92mm TB
FTP 98mm lid
85mm MAF
Mods before:
Torquer v2 cam
Stock ls6 intake
TSP 1 3/4 LT headers
TSP ORY
Powerbond UDP
Ported stock TB
AI 226cc heads
**443whp and 408tq
Last edited by 455GTO; Jul 5, 2013 at 02:24 PM.
Did you have an unported FAST on the first go arround, or a LS6 intake? I hope you mean you picked up 10 rwhp from just the port work alone and not the intake plus port work.
But I do think my cam is limiting a lot of the potential of the heads... Trending Topics
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Verdad Gallardo Why go to an 85mm unless you've maxed out the stock MAF? Even tuned, you rarely gain anything with them. That's another change you introduced at the same time. You might have lost power with the MAF and gained it with the intake.
Yeah you guys are right... I am the type who doesnt want to leave potential power on the table... Car runs great in the top end, now its just dialing in the traction with the 6speed
I would say the increase under the curve is nice even if you didn't see a big peak increase. Exhaust the next bottle neck?
I saw pretty similar results on my ctsv. With the v3 I picked up around 10hp going to a ported 92mm fast.
Also on a superflow so you may have picked up 15+ on a dynojet.
I saw pretty similar results on my ctsv. With the v3 I picked up around 10hp going to a ported 92mm fast.
Also on a superflow so you may have picked up 15+ on a dynojet.
Yes of course the car was fully re-tuned and calibrated for the new MAF/Intake. AFR ended up being in the 12.8-13.0 range from 4k on up.... Spent about 3 hours on the dyno dialing everything in.
Just curious: What were the specs on the AI Heads? Chamber Volume, did you opt for chamber CNC contouring and why didn't you go with the 232CNC program if they price is the same as the 226CNC?
