lldsandsll

i got to see the underside of my car today. i thought the stock mid section was straight pipes. i got my car slightly used. i noticed in my mid section the pipes we're connected by another pipe, ie, i had an H-pipe. is this the stock setup? i could have sworn it was straight pipes. anyway, that would explain why that, combined w/ the MBRP's sounds so mean. that would also explain whyi got 298rwhp on the dyno w/ my only other mod being a JLT intake.

DaBoss

No straight pipes. All stock GTs come with an H-pipe

acascianelli

Catted H-pipe is stock. 298whp from just an intake and tune? That doesn't sound right.

PLstang

Catted H is normal 298 with a CAI and tune isn't, but hey maybe you got lucky! Took a little more then that to get mine upto 300.

s197richie

yep, ever since 1986 actually...

ZZmustang

V8s have to have a H pipe, because of the firing order,2 cylinders on the same side fire right after each other, this would make to much back pressure unless relieved by the H.
Example; Chevy small block has on the left side if you were standing in front of the engine, Pistons number 2-4-6-8 and on the other side 1-3-5-7
The firing order is 1-8-4-3-6-5-7-2, This means that 5-7 and 8-4 right after each other, without the H the exhaust from the second piston firing would have a hard time exiting.

SonicBlue05GT

you need some sleep.

lldsandsll

thanks guys! 298 did seem high. i had it done at VMP. he said it must be the axleback, no mufflers. it's funny, it was around 100 degrees when tuning too, with humidity ranging between 15 and 20 percent. you'd think that would drag it downsome.there was a thread on here where i posted the dyno sheet, so i sh*t you not (operative word being i).

hammeron

H, stock setup



[IMG]local://upfiles/37808/B568F2E2237C4BF79B6EEFFF2B16F68D.jpg[/IMG]

ZZmustang

SonicBlue05GT

Are you saying you dissagree, or there is something wrong. Or just a comment in general?
In the latter case, You need to brush your teeth.