Originally Posted by
Clint My car has a full 3" system & I also have a 2.5" rear muffler that can be swapped on, both are pretty much straight through mufflers. We've datalogged & the difference in flow is almost undetectable. The difference in noise is huge!
I don't even bother putting the 3" rear back on anymore, even for the track or dyno. If you get your exhaust made 3" & then have it tranistion into a 2.5" rear muffler it will make it much quieter with very little (if any) loss of power.
I am guessing you are using an ssac 2.5 collector.
I have always found it silly to go 3" after a 2.5 inch header.Only so much air can flow through a 2.5 inch pipe,and going 3" after that makes no sense to me.(mandrel bent anyway).If you do really gain anything besides noise,I would be surprised.
Think about it ...
now a fuji,turbofreak or asp header that is 3" at the collector...definately want 3" for obvious reasons.
As for the DE/VE "race"
I have a friend with a bolted de...tearoffguy on here
We both have NXs ,mine is VE his is DE
We have been playing around on the street....NOT BREAKING ANY LAWS,SPEEDLIMITS,ETC.,and NOT STREET RACING
But ...WOT pulls and passing each other,etc.
His set up
DE
POP charger
SSAC 2.5
no cat
VRS 2.5
stock cams,ecu
Light flywheel,not sure of the weight...11lbs I think
My current VE setup
Pop charger,3"WAI
VE MAF
Thermoblock spacers
SSAC 2.5
No cat
Magnaflow oval muffler 3" in to dual 2.5 side exit
too fukin loud
stock cams,calum basic ecu
Light flywheel,11lb. I think
Both cars run flawlessly,use the same oil and have the same suspension.
My car is definately stronger,but not as much as you would think for the difference in cost to build.He has surprised me a few times just cruising along and taking off.From a roll it is closer than you think.
We have not gone from a dig,because his car has a 2nd gear syncro issue.I would waste him between 1-2 shifts
VE pulls harder ,and is way louder,but a good driver in a DE could outrun a poor driver in a VE.I will say that launching the VE is a little tricky when you are all pumped...lol.Wheelspin is fun,but not quick.
We plan on having a gruge match at the track someday....he wants me to disconnect my cams...LOL