Exhaust piping size

[toonz]

I have a B18C1 with the DC sports race header , 3 angle valve job, and AEBS Intake manifold ALL MOTOR is the route im staying with. This is a daily driver for me but I still want the most power squeezed out of it and wanted to know what is the best size to go for 2.25 or 2.50? Reason I have asked this question is because I see alot of people with 2.5 off of the race header but I thought it needed back pressure for power and wanted to know shouldn't I run 2.25 for back pressure for this simple setup? Thanks:yes:

[mikespeed95]

stock bore/stroke? what cams?

[toonz]

Stock Cams, Stroke, Bore, and Pistons Thanks

[mikespeed95]

just go with 2.5 if your n/a and stock displacement.

[toonz]

oh ok so 2.5 huh Thanks alot

[N/A EK]

^ Just get a greddy evo II catback ;)

[toonz]

Thanks Man but right now I gotta get this car running and out of here after exhaust it's going straight to Mainstream for tuning and after that it will be sitting until I come back LOL

[toonz]

Bump for anymore suggestions

[drmcivicsi]

2.5

[thepolecat]

hmmmm, I think this is the route to go...either will do you just right!

[Formally...]

Since you plan on tuning the car then I would go with the 2.5in. You can tune the low end to make up for any "lose of low end power".

[§treet_§peed]

^^ good point

[toonz]

Thanks Guys

[toonz]

hmmmm, I think this is the route to go...either will do you just right!
these are beautiful cars who did the work please tell :rolleyes: .......:gay: yeah right LOL no rice here buddy