I currently have a dynomax exhuast kit on my car and im sure you all know that it only covers the back half of my exhaust. I was thinking about upgrading the front half with 2.5 or 2.25 inch pipe with magnaflow cats from my manifolds into a 'Y' pipe than into my dynomax kit.
The stock pipe now is only 2". My dynomax is 2.5 for the intermediate pipe and 2.25 wear it 'Y's back out to the muffles.
Is this worth it? should i go with 2.5 or 2.25 OR scracth the whole idea? Will i loose to much torque and not gain any HP?
You'll alter the way it sounds, that's all. You won't gain anything and won't lose anything except money. The stock system has a nasty bend at the cats which will be nice to free up, but only if you have plans later down the road.
Sell you're cat back and find someone to mount a DI/DO midmount muffler and run true duals with high flow cats all the way back.Magnaflows probley sound the best.Probley have it set up and bent for around 400-500 dollars.At least thats about what everyone is paying.
04 PI swap,SVO Supercharger 8-9 psi,Alcohol injection,39lbs Cobra injectors,XCal2-Walbro 255 LPH fuel pump,4.10 T-Lok,2003 4R70W built to withstand by RobertP,450hp JMOD,3800 circleD stall,trucool 4739 Trans Cooler,Dynotech 3.5 Driveshaft,70mm T/B,SCP Cold Air Intake,90mm LMAF,JBA headers,Magnaflow Midmount,No cats with 3inch piping,Vogtland 1.6inch drop,Cobra R's and xenon body kit.