I have Pacesetter headers and a downpipe that were given to me when I bought my car last week ('03 GTP). I want to do my exhaust first before my 3.4 Pulley Setup, looking to do the exhaust and order the 3.4 Pulley Setup this week. My question is, to use the Pacesetter headers and downpipe will I need a o2 extention, and if so where do I get this? And since I have the downpipe what else to I need for a good setup? Sound doesn't bother me but obviously not ridiculously loud. I want a setup best for performance. Would I be best off going straight back from the catted downpipe with just mufflers? Or resonators too? If anyone could give me pointers on what to buy in order to have a less restrictive, performance setup that would be great.
Exhaust Setup?
- Thread starter psi
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REDCRAPGP
New member
Zzperformance for the extension and not sure if you'll need one or not.
Keep the stock resonator.. Hell keep the rest of the exhaust stock.. Your already addressing the restrictive areas by going with the headers... The rest of the exhaust is fine until your around 350hp or so when the rest is restrictive which you probably will not reach that point.
Keep the stock resonator.. Hell keep the rest of the exhaust stock.. Your already addressing the restrictive areas by going with the headers... The rest of the exhaust is fine until your around 350hp or so when the rest is restrictive which you probably will not reach that point.
Alright, thanks. Don't plan on going over 350. Is this the right o2 extention? http://shop.zzperformance.com/store/p/1237-O2-Bung-Extender.aspx
industrialfish
New member
Jesus christ, that isn't what you need. You need an O2 cable harness extension, because headers move the upstream O2 sensor further away. That part there is to get the downstream O2 sensor out of the gas flow to avoid a p0420 code on high flow cats, aka anti-fouler trick.