high flow cats worth it?

[adamrollo9]

hey all, i got a 2010 SV6 SIDI, atm i have a full pacemaker system on it, just been told today that i dont have high flow cats. And they are $300 each, just want to know if they are worth it. Also my engine light is on from getting the exhaust done, it seems like idle high when i start it up and also when i give it a rev it doesnt sound right,

cheers

[Woollie]

I saw these on ebay......any good?

2 X 2.5" VENOM Metal Cats XR8 V8 LS1 HSV VE Exhaust | eBay

[The pig]

Hi flow cats are definately worth it you want the least amount of restriction as possible especially with the pacemakers

[Not_An_Abba_Fan]

The cats on the VE flow more than enough. Fitting high flows won't do anything apart from making it louder. The change in the exhaust would have affected the way the O2 sensors read, get the codes checked, you may need a tune to turn off the rear post cat sensors.

What that Ebay ad fails to mention is that 100 cpsi cats are illegal in Australia as they don't meet EPA standards. The VE has to be Euro 4 compliant, so these cats would definitely fail an emissions test. The only high flow cat that is legal is a 200 cpsi one. Magna Flow are one of the few cats that are Euro 4 compliant. I can do them for $429 each plu shipping. These are 200 cpsi Euro 4 compliant and 100 % street legal..

[adamrollo9]

i cant get a tune, i got told the program isnt out yet till end of the year?

[bzr]

The cats on the VE flow more than enough. Fitting high flows won't do anything apart from making it louder. The change in the exhaust would have affected the way the O2 sensors read, get the codes checked, you may need a tune to turn off the rear post cat sensors.

What that Ebay ad fails to mention is that 100 cpsi cats are illegal in Australia as they don't meet EPA standards. The VE has to be Euro 4 compliant, so these cats would definitely fail an emissions test. The only high flow cat that is legal is a 200 cpsi one. Magna Flow are one of the few cats that are Euro 4 compliant. I can do them for $429 each plu shipping. These are 200 cpsi Euro 4 compliant and 100 % street legal..

So how will the filth know, do they count them?

[TrikkBen]

So how will the filth know, do they count them?

They use a sensor tool to read the amount of gases coming out the rear pipe..

[kuzman89]

i cant get a tune, i got told the program isnt out yet till end of the year?

MACE CAN TUNE YOUR CAR, look in the forum sponsors section. Steve can sort you out.

[astroham]

i cant get a tune, i got told the program isnt out yet till end of the year?

yes you can ... i have a my 10 sidi and have had it tuned with a full exhaust system i gained 30 kw atw ... if you are in sydney you can go to castle hill exhaust ... or i think mace engineering do a mail tune that is much cheaper and apparently getting great results ... all for the sidi man ... 3.6 sidi is tuneable ... just depends where you go ...
i have been looking into this for a while and was told 12 months ago that the tune would be out in 6 months ... the tuners are just saying that to keep you interested ... the fact is the tune is already available in some places and since you got your extractors done and the engine light is on i would say it is worth it ... what happens if something really ####s up that would normally trigger your ebgine light but you dont know cause its already on

[Sabbath']

yes you can ... i have a my 10 sidi and have had it tuned with a full exhaust system i gained 30 kw atw ...

So you've almost got asmuch power as a stock V8.....

[kuzman89]

So you've almost got asmuch power as a stock V8.....

probs be around 180-190rwkw now?? Stock VE SS's are around 220rwkw? + heaps more torque?

[astroham]

So you've almost got asmuch power as a stock V8.....

the 6.0l ss makes around 215atw and mine makes 180.2 ... plus like kuzman said a lot more torque from the 6.0 ... but it makes more than the vt series 1 clubby's and i dont know the figures on the 5.7's but i imagine power would be about the same but they would have more torque ... but for a 6 it goes hard