Cut-outs on a boosted car

mystang0673 · March 7th, 2010, 09:37 PM

Has anyone ever done this? Does back pressure affect boosted cars? I was just thinking about doing it on my car just for the heck of it for the sound of the cams. I was only gonna use mechanical cut-outs and i was only gonna do it if i can reach them from outside the car without jacking it up. its just an idea. but if its gonna hurt me as far as me needing back pressure, i wasnt gonna waste my time or money on doing it.

F8L GT · March 7th, 2010, 09:40 PM

I think it would help on a boosted car. Kinda the same way that straight through mufflers are better on boosted cars. hell i know they didnt hurt me on my N/A car when i had them on

I8ACMRO · March 7th, 2010, 09:40 PM

Yes it's been done....

YouTube - 2000 Vortech mustang cams

Look in the comments where he says he has them...plus you can hear them

b-on-b 5.0 · March 7th, 2010, 09:40 PM

u might loose low end torque but should improve top end hp i would think...i run dumped flowmasters on my car...it dumps before the axles..but no muffler back pressure i would think wouldnt effect it much..look at all the subarus and shit that run straight pipes and turbo backs..the faster you can get air in then out equals more power

mystang0673 · March 7th, 2010, 09:46 PM

well... i really want turn downs because they sound sick, ESPECIALLY on a cammed boosted car. BUT i hate the drone more than i like turn downs. lol. so i was trying to meet in the middle and have something i could use only when i wanted it. lol

mystang0673 · March 7th, 2010, 09:53 PM

man i cant wait to finally get mine tuned and get it to cam the way its supposed to. lol... my cams lope way faster than that but i know they should lope a lot harder and slower than they do

RyanGT · March 7th, 2010, 09:54 PM

Will you have LT's? I honestly don't think you would even notice a difference at all with a boosted car. It would be under the 10hp range. In either direction. If you have LT's you will have scavenging and the velocity will be up.

Keep in mind, it is velocity not back pressure

Just usually the smaller pipe sometimes has more velocity, not necessary back pressure.

mystang0673 · March 7th, 2010, 10:02 PM

yeah, it has long tubes right now...

RyanGT · March 7th, 2010, 10:12 PM

I think you would be fine with it if you wanted to do it.

Trick Tuners · March 8th, 2010, 12:32 PM

Originally Posted by RyanGT

Will you have LT's? I honestly don't think you would even notice a difference at all with a boosted car. It would be under the 10hp range. In either direction. If you have LT's you will have scavenging and the velocity will be up.

Keep in mind, it is velocity not back pressure Just usually the smaller pipe sometimes has more velocity, not necessary back pressure.

+1.
The Backpressure myth - Trick Tuners Forums

March 7th, 2010, 09:37 PM	#1
mystang0673 MM Fanatic 6.82@100mph 1.45 60' Join Date: Jan 2007 Posts: 3,260 iTrader: 0 reviews	Cut-outs on a boosted car Has anyone ever done this? Does back pressure affect boosted cars? I was just thinking about doing it on my car just for the heck of it for the sound of the cams. I was only gonna use mechanical cut-outs and i was only gonna do it if i can reach them from outside the car without jacking it up. its just an idea. but if its gonna hurt me as far as me needing back pressure, i wasnt gonna waste my time or money on doing it. __________________

March 7th, 2010, 09:40 PM	#2
F8L GT !FACEPLATED! 2002 Mustang GT 7.84 @ 86.01 Join Date: Jul 2008 Location: Upper Michigan Posts: 12,917 iTrader: 13 reviews	I think it would help on a boosted car. Kinda the same way that straight through mufflers are better on boosted cars. hell i know they didnt hurt me on my N/A car when i had them on __________________ MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK

March 7th, 2010, 09:46 PM	#5
mystang0673 MM Fanatic 6.82@100mph 1.45 60' Join Date: Jan 2007 Posts: 3,260 iTrader: 0 reviews	well... i really want turn downs because they sound sick, ESPECIALLY on a cammed boosted car. BUT i hate the drone more than i like turn downs. lol. so i was trying to meet in the middle and have something i could use only when i wanted it. lol __________________

March 7th, 2010, 09:53 PM	#6
mystang0673 MM Fanatic 6.82@100mph 1.45 60' Join Date: Jan 2007 Posts: 3,260 iTrader: 0 reviews	man i cant wait to finally get mine tuned and get it to cam the way its supposed to. lol... my cams lope way faster than that but i know they should lope a lot harder and slower than they do __________________

March 7th, 2010, 09:54 PM	#7
RyanGT MM Fanatic 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 4,258 iTrader: 4 reviews	Will you have LT's? I honestly don't think you would even notice a difference at all with a boosted car. It would be under the 10hp range. In either direction. If you have LT's you will have scavenging and the velocity will be up. Keep in mind, it is velocity not back pressure Just usually the smaller pipe sometimes has more velocity, not necessary back pressure. __________________ 2000 Black convertible GT: KB 15psi, and other goodies... 1971 Datsun 240 z: Header and rebuilt motor. (The DD)

March 7th, 2010, 09:40 PM	#4
b-on-b 5.0 Regular 1993 Mustang 5.0 LX 11.45@122.34 Join Date: Jul 2008 Location: Lakewood, CO Posts: 344 iTrader: 0 reviews	u might loose low end torque but should improve top end hp i would think...i run dumped flowmasters on my car...it dumps before the axles..but no muffler back pressure i would think wouldnt effect it much..look at all the subarus and shit that run straight pipes and turbo backs..the faster you can get air in then out equals more power

March 7th, 2010, 10:02 PM	#8
mystang0673 MM Fanatic 6.82@100mph 1.45 60' Join Date: Jan 2007 Posts: 3,260 iTrader: 0 reviews	yeah, it has long tubes right now... __________________

March 7th, 2010, 10:12 PM	#9
RyanGT MM Fanatic 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 4,258 iTrader: 4 reviews	I think you would be fine with it if you wanted to do it. __________________ 2000 Black convertible GT: KB 15psi, and other goodies... 1971 Datsun 240 z: Header and rebuilt motor. (The DD)

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: Cut-outs on a boosted car
Thread	Thread Starter	Forum	Replies	Last Post
cut outs	dopeman(me)	96-98	21	May 12th, 2008 11:24 PM
Cut outs	Drtbkercr5	General Tech	4	December 14th, 2007 11:41 PM
Cut Outs...	Regency 2007	2005 - 2010	8	June 6th, 2007 09:06 AM
Cut outs	Boris	5.0 Mustangs	9	March 28th, 2007 07:23 PM
Cut Outs	MnrlGry01gt	General Tech	4	September 17th, 2006 09:32 AM

All times are GMT -4. The time now is 01:53 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.