dfw

**Rebelracer568** · 07-21-2013, 11:48 AM

I know with my set up I ran my buddies steeda cai and bama race tune. Both cars had 3.55s and I walked him by about 2 cars.
I wish mine was a factory freak.

re-rx7 · 07-21-2013, 12:31 PM

It seems to me, that 3:31's are better for hwy pulls. I would like to run you. I live in Gainesville. I have JLT CAI and bama tunes, AB's.

**Rebelracer568** · 07-21-2013, 01:59 PM

Yea I like 3.31s as well. I wanted 3.55s for road racing. THat would be a good run. Im about to start working in sanger again so ill be closer

**5PointSlow** · 07-21-2013, 02:03 PM

I had LTs on the car before the blower and the gains through the curve were much better than the stockers. peak power wasn't a huge gain like everyone expects. its power under the curve that really matters... the boss mani doesn't really add power either. It moves the power curve as well. The sound alone to me was worth the money. The gains post blower install make it even better.

**Midnight11** · 07-21-2013, 02:10 PM

Bc I said worth it. I have more power through the curve and I'm going boost. Also have a lot less money in mine then you think

re-rx7 · 07-21-2013, 02:28 PM

Originally Posted by Midnight11

Bc I said worth it. I have more power through the curve and I'm going boost. Also have a lot less money in mine then you think

Baragin hunter huh! LOL Btw how you like the K springs? Are they straight bolt on or do you need Diff dampers?

**Dan12GT** · 07-21-2013, 03:19 PM

LTs are probably the most costly bolt on mod you can do, outside of major suspension components or forced induction, due to initial part cost and labor,(most people have them installed due to the difficulty of the installation). The peak gains won't be huge on our cars. Our exhaust manifolds are actually a lot more efficient than previous Mustang GT models. You will however build your power curve up no matter what, regardless of the peak HP gain. I think it is a great part to offset the low end losses from a boss manifold too. They are even better in S/C setups as you will obviously be pushing more air and better exhaust flow will naturally net you more power.

re-rx7 · 07-21-2013, 03:31 PM

Originally Posted by Dan12GT

LTs are probably the most costly bolt on mod you can do, outside of major suspension components or forced induction, due to initial part cost and labor,(most people have them installed due to the difficulty of the installation). The peak gains won't be huge on our cars. Our exhaust manifolds are actually a lot more efficient than previous Mustang GT models. You will however build your power curve up no matter what, regardless of the peak HP gain. I think it is a great part to offset the low end losses from a boss manifold too. They are even better in S/C setups as you will obviously be pushing more air and better exhaust flow will naturally net you more power.

I agree for F/I setups the benfits are pretty apparent.

**Midnight11** · 07-21-2013, 03:35 PM

Originally Posted by re-rx7

I agree for F/I setups the benfits are pretty apparent.

And you wonder why I said worth it. I'm going fi

**Kaane** · 07-22-2013, 01:21 PM

Gains are actually really good.

ARH dyno.

http://www.americanracingheaders.com...ustang_5_0.htm

Vorshlag installed same headers and with no tuning gained 32rwhp.

JOHNGT · 07-23-2013, 12:54 AM

I don't know anything about the 5.0. I know my car went from 301rwhp to 333rwhp after my longtubes were installed. I say that's a good increase. Only issue I have is ground clearance.

**Doug1227** · 07-23-2013, 11:32 AM

My car is supercharged and I'm just running cat deletes. I'm sure that long tubes would help me, but I'm not sure if it's worth the money. Most increases you see are from going stock to longtubes, not cat delete or offroad H/X to longtube. I'm thinking I might see another 20rwhp and am not sure it's worth it for that little.

**DirtyD** · 07-24-2013, 10:53 AM

Originally Posted by Doug1227

My car is supercharged and I'm just running cat deletes. I'm sure that long tubes would help me, but I'm not sure if it's worth the money. Most increases you see are from going stock to longtubes, not cat delete or offroad H/X to longtube. I'm thinking I might see another 20rwhp and am not sure it's worth it for that little.

I understood it that LTs on a FI car helped out much more than on a n/a car.

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**Dominic Toretto** · 07-24-2013, 11:01 AM

Originally Posted by DirtyD

I understood it that LTs on a FI car helped out much more than on a n/a car.

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That is definitely true. Also work better on larger displacement motors. It is common place to see 18-25rwhp and similar torque on LS1s using 1 7/8s headers without a cam. I could see adding larger tubing if there was a big cam involved.

-Alex

**KungFuHamster** · 07-25-2013, 10:08 AM

why are a larger diameter headers not worth as much on these cars? Dark Pony hit the nail on the head. These motors, while badass, are still only displacing 302 ci.

same reason a larger throttle body isnt worth anything.

How much you pick up from an aftermarket part is based on how crappy the stock stuff is. So the fact that one doesn't really gain a significant amount of power from stock is a testament to how good the stock stuff is. The other part of the equation is velocity.

Ill take a smaller primary tube header with a good exhaust velocity and keep my torque. we're talking about street cars here right?