I just purchased a VX SS and i have a few mods lined up for it.. starting with extractors, full exhaust system with high flow cats, cold air intake, fuel pump, and a good tune.. what sort of power should i be chasing with these mods??? and if there is any mods that i should be looking at, without spending too much cash.. Cheers
02 ss, 4spd auto, i got standard headers, twin 2.5" catback, otr cai mafless, and a willall tune, now have 270kw at the fly and 233rwkw. feels quick to me but then again its the first v8 ive had![]()
It varies mate. Maybe around 220-240rwkw. Other mods to look at would be diff gears if you are serious about performance. You can change a slug auto from 3.08 to something higher like 3.7, manual you could go 3.9 or 4.1's without affecting cruise economy too much. 4.1's maybe use a bit more on the highway.
Also depends on whether you use an airbox setup with a MAF and maf tune, or an OTr with MAfless, and the size of the exhaust/extractors, need a bit more info on your plans to give a more accurate figure mate.
Ive got the same mods on my vx II ss twin 2 1/2 difilippo exhaust standard headers and cats, ramjet otrcai and mafless tune done at gm motorsport in melton and i only got 210rwkw on my dyno sheet and the package i got said 290fwkw and auto i thinks 27% loss 27% of 290kw is around 80kw so i suppose thats rite i was hoping for at least 220rwkw, its quick but i always want quicker
Btw my ss threw a belt 2 weeks after i got all that done for no apparent reason so that was another $300 for a 25% ud belt new pully + labour![]()
Last edited by mike_is_bored316; 11-06-2010 at 12:34 PM.
mate you need a better tune if u only got 210rwkw out of it.yours manual or auto, is there any difference to how the tune would go with manual or auto?
manuals will make more 210rwkw without extractors or cats is about right
riteo then..should i count myself lucky to get 233 rwkw in that case?
Don't get caught up on dyno figures. How does it feel out on the road? Did you get a before and after run?
233rwkw is about 315 kw at the engine so yeah maybe a optimistic dyno but you got it tuned a willall martin is a good tuner
i had twin 2.5 catback, mafless tune with otr done at gmm also and pulled 232, its got extractors and hiflow cats on it now getting tuned monday week, expecting to pull 250ish
I have an VX SS, A4, when I had Extractors, 3" hi flow cats, twin 3 exhaust and mafless tune instaled it did 202rwkw. Not sure how much it gives now that I had an OTRCAI installed, but together the car feels so much better than standard. You may get more or less power than other people witht the same mods, depends on Auto versus Manual and the dyno I suppose.
That figure seems too low for your mods K Man I would be looking at a different tuner if i was you