blu2ksi

Setup....b16a2
ITR IM & TB , gsr cams, str cam gears,cometic headgasket(.o57") drag gen 3kit, rebuilt t3/t4(stock internals), Apexi N1 catback, walboro 255 pump.

Bottom line, i run an apexi n1 with mycat. I cant decide whether i want a thermal 3 " and deal with the constant noise and aggravation during the day and speed during the night. Or should i pick up an exhaust mani and keep my **** quiet but quick. My question is will a new exhaust mani with my current exhaust help my spool or should i just shut up and buy the thermal? I cant afford both so i would appreciate if that wasn't suggested. I am looking for quick repsonses so give it to me guys.

CRX T-Si

If I was in your position I would go for a 3" exhaust. Not hating on the Thermal but Price is an issue, and I'm ******* cheap.

N1 exhaust is not quiet so if you want to keep it on the down low then neither would be a good choice.

It all depends on what you want, Power vs Quietness..........

InLimbo87

People on here tend to really run into boost spiking problems when they really open up the exhaust with drag mani/deltagate setups. I'm not sure if that is a direct cause, or merely just coincidence. But maybe try buying a custom 3" exhaust and a tial wastegate for the price of a thermal...

Deluzional

Well, if your exhaust is aggravating you, you should definitely get another exhaust. I dont see how you could sacrifice quicker spool for something that will drive you insane, unless you can live with it

turbopimp

Get a 2.5" straight pipe to replace the cat. It's way cheaper than either a new mani or exhaust and will dramatically increase spool time. Since you seem concerned about exhaust sound volume, I'm sure it will make your decision as to go with a 3" exhaust or not that much easier. A new exhaust mani or 3" exhaust system is pointless if you're running a restrictive cat.

lgcubana

I find that the turbo itself makes an excellent noise supressor. When I 1st started me DelSlow project , I was running low on funds when it came to the exhaust. So I slapped on a knock off Greddy style flow through exhaust on my 2X resonator no cat 2.5" piping. Sounds mellow w/no buzz.