A.E Motoring

iTrader: (1)

would it be better just to upgrade to a full 4 inch to mate with the down pipe? or would i lose any power from 3 to 4 back to 3? thing is i already have a full 3 inch exhaust already done mandrel bent, should i sell and redo? anyone have any dyno graphs should this set up? thanks

-Anthony

tony1

Surely you've learned by now that questions like this without any details can't be answered.

A.E Motoring

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Surely you've learned by now that questions like this without any details can't be answered. </TD></TR></TABLE>

LOL, damn i guess this thread is pretty much useless, lol me


Modified by Dual Cam Racing at 3:41 PM 4/17/2007

tony1

Comes down to power more than anything. At 500hp it's definitely not affecting power. At 800hp it's probably a little different story.

92eg6

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Comes down to power more than anything. At 500hp it's definitely not affecting power. At 800hp it's probably a little different story.</TD></TR></TABLE>

not to jack the thread or anything but is it really not a big difference? because im shooting for 600+ w/a pt6776bb and i also have a 4"dp and 3" exhaust...the car is still a "street" car and i was gonna upgrade being that my current 3" is crushed bent anyway....4"FTW

A.E Motoring

iTrader: (1)

HiProfile

The best turbo exhaust is no exhaust (zero backpressure). Less backpressure will get you a bit more power as well as help spool the turbo a bit faster. But as Tony mentioned, there's always a point of diminishing returns. Usually when it comes to 3" and above, you get what you can fit or afford, and leave it at that unless it does become a restriction or you need every last whp. If you have a 3-4-3 setup, I'd bet you could put the money to a better place (IM? cam or two? Springs/retainers?), especially given the price of bends and pipe atm.

A.E Motoring

iTrader: (1)

i cant drive around with no exhaust around town, cops are very strick around here, does anyone know if they make a flex pipe from 4 to 3?

92eg6

iTrader: (1)

ive never heard of a 4 to 3" flex pipe....but i know there are 4" to 3" reducers...burns makes some....u can always put a flexpipe on ur down pipe and then use the reducer from ur flexpipe to ur exhaust

A.E Motoring

iTrader: (1)

yea your right i guess i can do that, just get another 4 to 3" exhaust reducer just like the down pipe and weld that to the exhaust then put the flex on there, then flane it then hook up the exhaust, lol

get something like this