lwrdcav

Im redoing my exhaust from the stock cat. back and i cant decide on wether to do 2 1/4" or 2 1/2"....any suggestions. i have a bomz muffler and everything is stock as far as exhaust goes.

94tegRS

what engine mods and what size engine is in there?

__________________
current
-84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex
history:
-01 R1-04 daytona 600-94 teg RS-95 teg LS
-91 teg RS-92 teg GSR-94 civic CX hatch (3 times)
-94 civic DX-96 civic HX-97 Accord LX-72 superbeetle
-74 beetle-84 silverado-66 c10-74 maverick-78 280z
-84 200sx-86 tercel wagon-95 mustang V6

lwrdcav

Its a 2.2 with only intake. If i use flex pipe will i still pass emissions?

94tegRS

dont go with flex pipe, you want a nice smooth flow, not a pipe ith ripples all over. and Id go with 2 1/2

__________________
current
-84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex
history:
-01 R1-04 daytona 600-94 teg RS-95 teg LS
-91 teg RS-92 teg GSR-94 civic CX hatch (3 times)
-94 civic DX-96 civic HX-97 Accord LX-72 superbeetle
-74 beetle-84 silverado-66 c10-74 maverick-78 280z
-84 200sx-86 tercel wagon-95 mustang V6

ttweakk27

The bigger the better!

KustmAce

Couldn't be more wrong.

Go with 2 1/4". That the best for a non-forced induction car.

__________________
MAKE ART, NOT WAR

94tegRS

my buddy's dad owns a muffler shop and he told me that even on my 1.8 liter 2.5 would be fine, a little on the big side but wouldnt affect teh power noticably at all at the botom end. seems like a 2.2 would be a sufficient jump in displacement to justify the 2.5"

__________________
current
-84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex
history:
-01 R1-04 daytona 600-94 teg RS-95 teg LS
-91 teg RS-92 teg GSR-94 civic CX hatch (3 times)
-94 civic DX-96 civic HX-97 Accord LX-72 superbeetle
-74 beetle-84 silverado-66 c10-74 maverick-78 280z
-84 200sx-86 tercel wagon-95 mustang V6

KJRich

Yep. 2.25" unless you're boosting.

__________________
1999 Chevy Venture LS Extended 3.4 V6 Intake Gaskets Replaced
2003 Cavalier LS Sport Coupe, 2.2 Eco, 5 speed Getrag, all black

94tegRS

alright, im voted out, Im gonna have to go talk to him some more, see if he has any info to back his claim.

__________________
current
-84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex
history:
-01 R1-04 daytona 600-94 teg RS-95 teg LS
-91 teg RS-92 teg GSR-94 civic CX hatch (3 times)
-94 civic DX-96 civic HX-97 Accord LX-72 superbeetle
-74 beetle-84 silverado-66 c10-74 maverick-78 280z
-84 200sx-86 tercel wagon-95 mustang V6