[zinsavage123]

gotta 01 gt auto with a o/r x right now with mil's. Now what brand has best lt+shorty o/xpipe that fits automatics? will I still need my mil's, any extension wire kits for 02 sensors or anything to run the header? and finally do and will these add hp if so how much whp? just wondering cause most say it only does cause of the o/r pipe? Im getting upr kmember put on so figure I add lt's

[BaznastyDave]

I have been debating on if I want to get LT's or not, I don't think the price justifies the gains.

[zinsavage123]

yeah but figure since the k member has to go in minus well, that is IF it actually is gonna add whp with my mods? if were only talking 1or2 whp I aint doing it??

[bottled2v]

i'm not sure about power numbers, but the flowtechs are worth it imo, especially if you plan on any type of forced induction down the road. I mean figure you'll have 300 into them(cost $400 then you can sell your midpipe for 100) and since you're pulling the kmember anyways it'll make install a sinch.

[1_nice_03_gt]

just adding longtubes maybe 10-15rwhp at most, but if you have cams your looking at a decent gain 20+hp on top of the gains from the cams

[Mustang_Girl_32]

When I had done the exhaust on my GT I had decided that while my brother was down there he could go ahead and do the longtubes too. I also have an auto and went with Mac LT. They were decently priced and had a great fit. The only issues you will have is getting them in there because man with our motors it is a tight squeeze. If you are already going to be doing it and have all that off, I would say go for however I didn't do the job. My brother hated every second of it and said he would never do anything like that again. The drivers side was the easiest getting to the bolts and getting them all in and tightened. But the passenger side was a bitch. It's really going to be on if you can find someone who will do it for decent price but I got lucky my brother is a ford mechanic and took it on lol.

[mrbigjeep]

Originally Posted by BaznastyDave I have been debating on if I want to get LT's or not, I don't think the price justifies the gains.

i got my longtubes and prochamber to match for $240 and install was free since i did it myself...pretty easy to justify that.

for the auto i would get hookers or flowtechs. i'd probably just go with the flowtechs unless you get a deal on the hookers. don't have to touch them to drop the trans which is really nice.

[bottled2v]

^ yup my headers stayed bolted in place when i dropped my trans a few weeks back. just really had to jack up the motor and remove the pass motor mount so i could get the damn starter off.

[mrbigjeep]

tubular k ftw...bolts are soooo easy to reach now

[BaznastyDave]

Originally Posted by 1_nice_03_gt just adding longtubes maybe 10-15rwhp at most, but if you have cams your looking at a decent gain 20+hp on top of the gains from the cams

Ehhhh...... everyone is entitled to their opinion but i would say about 4-7 WHP with bolt ons and 10-12 with cams at most..... I think JAYC didnt gain anything when he done headers.

[zinsavage123]

Originally Posted by BaznastyDave Ehhhh...... everyone is entitled to their opinion but i would say about 4-7 WHP with bolt ons and 10-12 with cams at most..... I think JAYC didnt gain anything when he done headers.

damn does anyone have a dyno here or anywhere with lt's on a 2v gt vs stock? without cams and boost to see what it added with boltons?

[bottled2v]

Originally Posted by BaznastyDave Ehhhh...... everyone is entitled to their opinion but i would say about 4-7 WHP with bolt ons and 10-12 with cams at most..... I think JAYC didnt gain anything when he done headers.

did he dyno it before/after on the spray? there's a fella on mustangforums that claimed 20peak hp and 50+ ft lbs while spraying a 100 shot, only change was longtubes.

[Massie02GT]

I've had SLP longtubes on my auto for over 3 years now. Perfect fit/finish. Pricey though and you can only run their mid pipe with their headers, or at least that's what they say. I didn't take any chances and just went with their X.

[3valveStallion]

If you plan on putting up serious numbers in the power department, do it right, get longtubes and catbacks, wait till you have the scratch, its justified

[Smilieboy]

Originally Posted by zinsavage123 damn does anyone have a dyno here or anywhere with lt's on a 2v gt vs stock? without cams and boost to see what it added with boltons?

The closest i can give you was mine. I had 242 rwhp in mine with a stock auto and all bolt ons. We put in a manual, bullit intake and LTs and ended with 281.

[mrbigjeep]

i gained a bunch with my longtubes

definitely more than 10rwhp

dynod 274 in 70degree weather. went to an automatic (more drivetrain loss) with the longtubes and dynod 282 in 100degree weather with 100percent humidity

[86er]

SIGH here we go again. If you look at the peak hp numbers, get up from your computer and repeatedly punch yourself in the dick. Now, when you install long tubes, it GREATLY changes the area under the curve, where you spend 99% of the time you are beating on your car. The gains from 2500 to just under 5800 or so are more than a few ponies and greatly noticed.

last set I did car picked up 4mph with no other changes.

sum it up, throw away, dont look at and forget the peak numbers, under the curve they are very nice and make a noticable change in performance

[zinsavage123]

I been looking alot bout these and it seems it may not show much whp at peak but overall through the powerband quite a few whp with lt's.

[BaznastyDave]

Originally Posted by 86er SIGH here we go again. If you look at the peak hp numbers, get up from your computer and repeatedly punch yourself in the dick. Now, when you install long tubes, it GREATLY changes the area under the curve, where you spend 99% of the time you are beating on your car. The gains from 2500 to just under 5800 or so are more than a few ponies and greatly noticed. last set I did car picked up 4mph with no other changes. sum it up, throw away, dont look at and forget the peak numbers, under the curve they are very nice and make a noticable change in performance

I agree it helps everywhere but did the car have an off road mid-pipe before the LT's? Or was it stock headers n mid-pipe then swapped to LT's and better mid pipe? Also was the run he picked up 4mph the same temp and same tires as the 4mph less run? (No arguement intended, just trying to gather info) And Jeep, was the 2 runs on the same dyno and same guy tuning it?

[99 blk gt]

As stated above there was a article in some mustang magazine that showed the dyno results of the gains with lt headers. The peak gain is like 10-15 hp and 15 tq but the average hp gains Was around 22 and 25 tq. The area under the curve is what is most important you spend maybe a fraction of a second at th actually peak rPm so what you really feel is the overall gain and a much thickEr powerband. They even tested shortys vs long tubes and the bbk shortys had an average gaIn of 12-15 hp/tq but only a 5 peak gain on each. This tells us that headers may not increase you peak numbers all that much but make the overall power curve thicker and longer meaning you will make more power throught the rpm range and that's really where it counts.