WogBoyz
435rkw/590rwhp
- Joined
- Feb 8, 2009
- Messages
- 3,151
- Reaction score
- 16
- Points
- 0
- Location
- Cairns, Qld
- Members Ride
- 08 VE SSV M6 Ute
Daniel_89 how did ya go mate? end up getting ya zorst done yet?
Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Personally. Save the money and get a cam. Pacemaker headers plus cat and install is 1400/1800 hpc. Cam is 3k.
How is it going to breath though if u put a bigger cam in it but can't push out thegas as the headers and cats are too restrictive??
true story, 6.2L with our street cam is 320rwkw with standard extractors, put xforce 4 into one 1" and 3/4 2.5" extractors and it picked up 40rwkw with a new tune obviously.....
dyno proven day in day out ssv with otr and cat back about 225-230rwkw with tune... with extractors 250 + rwkw... standard ssv makes about 205-210rwkw....
Interesting, my L77 on E85 was 212 rwkw out of the packet, 218 with catback, 249rwkw & 550nm with OTR and tune (bonnet up), 253rwkw & 580nm (bonnet closed) with OTR mod using latest E85 AFR calcs in EFIlive, now with HSV extractors is 289rwkw and 620nm (bonnet down).
Obviously the headers delivered the benefit of 16% increased Volumetric Efficiency to the E85 tune on the latest engine variant, L77. That translates to 12.5 seconds 0-190, good enough for me with 7.4 l/100k @ 116k economy.
Having spent nearly $$$ on licencing and tweaking tuning tables and three days expert dyno time to increase the L77's VE with just bolt-ons (specifically in aid of sustained high speed interstate driving), I say yes, get the HSV headers.
Change the cam and you change the heart of the engine, for me it's unlikely to get the same drivability and economy with a cam's bigger lift / duration shifting the power band up the tacho. Cheaper too.
With what you wrote, did u use the hsv cat as well as headers or just L77 cats with hsv headers..
I thought that the cats were the same...and that there wasnt any cutting or welding needed when matching it to the cat-back system.
Hence, the easy upgrade....you confuse me.:hmmm: