Anyone running electronic cutout?

gtrice31 · 06-25-2007, 11:54 AM

on their stock exhaust?

Havent measured yet but anyone know off hand what stock 07 si sedan exh diameter is...

Im not supposed to mod the exh but figure ill just do a cutout and she'll never know..lol.

thanks

slostjoe · 06-25-2007, 12:21 PM

Noone that i know of 2 things it would lose alot of back pressure and it would probably sound like crap

k20beast · 06-25-2007, 01:33 PM

exhaust is 2.25 and im think the axle back may be 2.5 no for sure. only time i race with open is from a roll bc it will hurt the lil bottom we have. it is very loud to bc i drove open header to the exhaust shop when i got that done. (stock header not dc)

gtrice31 · 06-25-2007, 03:55 PM

Quote:

Originally Posted by k20beast

exhaust is 2.25 and im think the axle back may be 2.5 no for sure. only time i race with open is from a roll bc it will hurt the lil bottom we have. it is very loud to bc i drove open header to the exhaust shop when i got that done. (stock header not dc)

Thanks man..

Decided to have my tech make a header for me... to bolt to stock cat.
aem SRI ordered.
Ill dyno base then with intake, then with I and Header, Then last I H and drop exhaust... Looking for no back pressure...

Shark Tek · 07-25-2007, 01:24 AM

Quote:

Originally Posted by slostjoe

Noone that i know of 2 things it would lose alot of back pressure and it would probably sound like crap

Backpressure, low end torque lost? Wrong!

Sound like crap? Right, but the Vtec switchover is a lot louder.

DMH Electric Cutout Pre/Post Dyno

slostjoe · 07-25-2007, 01:35 AM

Quote:

Originally Posted by Shark Tek

Backpressure, low end torque lost? Wrong!

Sound like crap? Right, but the Vtec switchover is a lot louder.

DMH Electric Cutout Pre/Post Dyno

Post some vids im interested in this setup.

Shark Tek · 07-25-2007, 01:37 AM

http://youtube.com/watch?v=X8QxWNfQrvU

06-25-2007, 11:54 AM	#1 (permalink)
gtrice31 Senior Member Join Date: Feb 2007 Posts: 173 iTrader: 2 / 100%	Anyone running electronic cutout? on their stock exhaust? Havent measured yet but anyone know off hand what stock 07 si sedan exh diameter is... Im not supposed to mod the exh but figure ill just do a cutout and she'll never know..lol. thanks

07-25-2007, 01:37 AM	#7 (permalink)
Shark Tek Senior Member Join Date: Jun 2006 Location: Puerto Rico Posts: 710 iTrader: 0 / 0%	http://youtube.com/watch?v=X8QxWNfQrvU Last edited by Shark Tek; 07-25-2007 at 12:21 PM.

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06-25-2007, 12:21 PM	#2 (permalink)
slostjoe Senior Member Join Date: Apr 2007 Location: Springfield, MO Posts: 3,804 Skyler iTrader: 4 / 100%	Noone that i know of 2 things it would lose alot of back pressure and it would probably sound like crap

06-25-2007, 01:33 PM	#3 (permalink)
k20beast Senior Member Join Date: Feb 2007 Location: clemson SC Age: 18 Posts: 1,158 zack iTrader: 2 / 100%	exhaust is 2.25 and im think the axle back may be 2.5 no for sure. only time i race with open is from a roll bc it will hurt the lil bottom we have. it is very loud to bc i drove open header to the exhaust shop when i got that done. (stock header not dc)