LUMPY85

i put a 2000 5.3/4l60e in my jeep wrangler, it doesnt have alot of low end torque, so im thinking maybe i dont have enough exhaust.

i have truck headers, with 2 1/4 exhaust running into magnaflows that have a 2.5 inch core, then back to 2 1/4 ehaust with a turndown. my total exhaust length is 4 feet on each side, there is no crossover, it is true duals.

its really all i had room for, otherwise i would have run a single 3 inch with a cat and all.


Is this possibly part of my problem with not having much low end torque?
i had wait4me performance tune it mailorder style.

i am also wondering if the 5.3's have intake gasket leak problems like the older vortecs? i dont think its leaking, i just want to know if its something to look out for.

thanks

skyhighsami

iTrader: (8)

Put in an X or a muffler with an internal X. Unless it has been tuned it would have all the TM in the ECU and it sucks royally

LUMPY85

so the exhaust crosses paths? i dont have room for that. i could maybe fit an h pipe, but thats it.

GMCtrk

iTrader: (27)

Crossing the exhaust is key I believe.

Also, what rear gears do you have

skyhighsami

iTrader: (8)

Are your two muffler side by side? If so then get one muffler with 2 inlets and 2 outlets. Or get a Magnaflow that is a single inlet dual outlet and turn it around, they are reversible and run a 2 3/4 or 3 inch out the back

LUMPY85

i have 3.73 gears and 31's. my mufflers are on opposite sides of the transmission and transfercase. so im not sure howe to X them, its all tucked up under a wranger, there isnt any room for crossovers and stuff underneath.

GMCtrk

iTrader: (27)

You're a little overgeared. But I think you may be expecting too much. Your wrangler can't weigh near what a fullsize GM truck weighs, so the lowend should at least be decent.

MorepowerTY

Unless your pushing power (blower) thru the exhaust, the true duals will kill your low end TQ. Go single in single out and turned down, and you'll notice much more TQ. Your losing to much back pressure from your set up.

LUMPY85

so you think i need to Y the exhaust, and run one muffler. is 3 inch to big? in order to run a y, i will have to custom make headers for it. there is no place to run the exhaust from one side to the other except under the oilpan, and i would need a front dump header on the drivers side. i cant use blockhuggers, they hit the motormounts.

GMCtrk

iTrader: (27)

I'd go 2.5" myself. I feel 3" is too big even on my 6.0. It is basically stock though.