Thread: '05 GP GXP vs. '04 Mach1 Mustang

Get rid of garbage intake manifold

Just throwing it out there...I have an ls1 intake....91parkaves old setup that'd if much rather give to someone I know then some random ls4 guy from facebook

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Originally Posted by DirtDog

Just throwing it out there...I have an ls1 intake....91parkaves old setup that'd if much rather give to someone I know then some random ls4 guy from facebook

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Hmmmm...PM me breh.

Done dond

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Originally Posted by 91parkave

Get rid of garbage intake manifold

On a scale from 1-10...how much difference does it really make?

I mean. Honestly.

needs more this sound.......

Scroll down on this page and look at the ls1 IM vs the ls6 IM
http://www.fiero.nl/cgi-bin/fiero/sh...tyle=printable

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Originally Posted by Below Average Joe

needs more this sound.......

Working on that.

Brian Tooley Stage 3 I think is going to get the job done.

Originally Posted by DirtDog

Scroll down on this page and look at the ls1 IM vs the ls6 IM
http://www.fiero.nl/cgi-bin/fiero/sh...tyle=printable

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I know the LS6 is much better than the 1, I've just never checked the guts of an LS4, I guess they're really that bad. I knew they bottlenecked pretty bad after the TB.

Yea honestly the ls4 is ****. When u do an IM swap you'll loose a little bottom end torque. But we can spare some of that for more HP

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I had enough problems spinning anyways, so a shift up in the powerband wouldn't bother me at all.

Originally Posted by blueguy

On a scale from 1-10...how much difference does it really make?

I mean. Honestly.

7with no tuning but since I already upgraded to the ls7 maf... And ls2 tb at the time of install . it was a 11on a scale of 1-10. The sad part is you get used to the new power fairly quickly and u want more.

I'll have to find some pics but the ls4 im bottlenecks almost half of the inlet after the tb the ceiling of the intake is shallow as hell and compared to the crude ls1 intake, you can see why this is a essential mod.

10-15 whp ....maybe a couple more give or take but the numbers grow way more with the other supporting mods, bigger tb, CAI, maf, exhaust .etc... Headers and intake manifold should put you at 310 whp.

I've never seen a Mustang from behind. Thanks for that new vantage point.

Originally Posted by 02 WS6 TA

I've never seen a Mustang from behind. Thanks for that new vantage point.

I never seem to disappoint, do I?

Originally Posted by 91parkave

Headers and intake manifold should put you at 310 whp.

lol

How did I miss that?

Because a tune/intake/exhaust GXP makes 270~.

You're telling me an intake manifold and headers add 40WHEELhp?

This is a LS6 intake LS6TB (75mm just like ours) with a cold air intake and garbage doug thorley headers. he pulled 317FWHP out of it, which aint bad being n/a 5.3. cam will add some pretty huge numbers to the equation remeber our cars dyno stock @ 249 ish whp so not bad at all. the biggest hold back is that ****ty DOD stock cam and our our 5.3 bore size

http://ls1tech.com/forums/ls4-perfor...l#post18089260

Hmmm, you have dyno business to show it?

click the link