Longtube woes.

RAGEman · March 26th, 2008, 10:35 PM

How many of you have installed LT's and had the car run like crap? I have read a few stories on this and will be installing LT's in a few days. What causes this? How can it be corrected?

SWEET2KSTANG · March 26th, 2008, 10:40 PM

my car ran just fine after install. me and doc installed mine.

RAGEman · March 26th, 2008, 10:45 PM

I just purchased the Percy Gaskets that you were having trouble with. Do you still recommend them? It comes with 4, did you double them up?

SWEET2KSTANG · March 26th, 2008, 10:58 PM

i recommend them, i just have terrible luck with this car. i am the one that get that 1 in 100,000 that will go bad. i will be installing abother set on there soon.

RAGEman · March 26th, 2008, 11:02 PM

Originally Posted by SWEET2KSTANG

i recommend them, i just have terrible luck with this car. i am the one that get that 1 in 100,000 that will go bad. i will be installing abother set on there soon.

Did you double them up?

Ugmul · March 26th, 2008, 11:18 PM

Lol, dont seperate the 2 metal parts on the gaskets. There are 2, not 4, though if you feel you are stronger by spliting one of them into 2 pieces, then, gratz to you!

if they came to you seperated, I suggest returning them.

blk01gt · March 26th, 2008, 11:25 PM

When i installed mine the car ran rich as hell and would actually cut off while idling. I fixed it with my Diablo tuner and now it runs great.

RAGEman · March 26th, 2008, 11:34 PM

Originally Posted by Ugmul

Lol, dont seperate the 2 metal parts on the gaskets. There are 2, not 4, though if you feel you are stronger by spliting one of them into 2 pieces, then, gratz to you!

if they came to you seperated, I suggest returning them.

It is indeed 4 seperate pieces already.

mpboy · March 26th, 2008, 11:44 PM

when i did mine, the car ran like crap for about 20 mins but i keep driving, i think it has something to do with the computer cycleing through, but it can be a pain making sure u have no leaks, plus a good tune will help a lot. and remeber to get o2 sensor extensions, and mil elems, but the tune will turn the CEL off

Ugmul · March 27th, 2008, 12:04 AM

Im looking at mine right now, its 2 pieces, each piece is 2 gaskets mushed together, at each end its pressed together, can even see a mark where it looks like it was pressed with a heat gun of some sort. Im sure I could pry them apart but package said 2 head gaskets.

jivepepper · March 27th, 2008, 02:52 AM

My ran a lot better afterwards.

Hsvcobra99 · March 30th, 2008, 08:56 AM

Im thinking of going L/Ts but I also have the Eibach pro springs and Tokico adj struts and shocks, My question is will there be an issue with scraping of the L/Ts with basani x-pipe and maganaflow catback or should I just go mid length

Pony Problem · March 30th, 2008, 01:35 PM

ok..so ive never owned anything but f-bodys...but i just bought 01 gt and the guy gave me a set of coated headers to go with it. Now they have the extensions, but what is this mil eliminators your talkin about? I figure its gunna jack with the way it runs, especially since im gettin rid of the cats when i do the rest of the exaust. So how do i fix this lol

RAGEman · March 30th, 2008, 02:46 PM

Originally Posted by Pony Problem

ok..so ive never owned anything but f-bodys...but i just bought 01 gt and the guy gave me a set of coated headers to go with it. Now they have the extensions, but what is this mil eliminators your talkin about? I figure its gunna jack with the way it runs, especially since im gettin rid of the cats when i do the rest of the exaust. So how do i fix this lol

I too have only owned F-bodies, this is my first Mustang so we are in the same boat. MIL eliminators simply keep the SES light from coming on after removal of cats.

Also, I only need one pair of extensions correct? My front 02 sensors will reach their new location correct?

Pony Problem · March 31st, 2008, 11:30 PM

ok well the headers i have, have o2's with extensions on them. so all i will need to keep the ses light off is a set of eliminators?

MustangMatt96GT · March 31st, 2008, 11:32 PM

Pny Problem.

Yes

and

Rage, the extensions are for the front O2s, and you just need one set.

the real shocker · March 31st, 2008, 11:45 PM

what caused mine (and a few others, why not all i have no clue) to run bad was how far down the 02's were extended. My car ran like a cold natured carb motor on a cold start-up and would nearly buck you out of the car if you set the cruise or held it steady anywhere between 12-1500 rpms. I took it to the tuner b/c my mail ordered tune didnt completely fix the problem.

Basically his explanation was when the O2's were moved farther away, the sensors were getting wild readings due to the exhaust cooling off by the time it got there and the computer trying to compensate for it (at least thats what i gathered from it). I have no clue what he did to fix it, but he did...

hope that helps bro

Pony Problem · March 31st, 2008, 11:48 PM

hope i dont have that problem because all my friends just have chevy tuing equipment! lol no ford guys round here that i know of

March 26th, 2008, 10:35 PM	#1
RAGEman Enthusiast 1965 Mustang Fastback N/A Join Date: Dec 2007 Location: La Porte, Texas Posts: 819 iTrader: 0 reviews	Longtube woes. How many of you have installed LT's and had the car run like crap? I have read a few stories on this and will be installing LT's in a few days. What causes this? How can it be corrected?

March 26th, 2008, 10:40 PM	#2
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	my car ran just fine after install. me and doc installed mine. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

March 26th, 2008, 10:58 PM	#4
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	i recommend them, i just have terrible luck with this car. i am the one that get that 1 in 100,000 that will go bad. i will be installing abother set on there soon. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

March 26th, 2008, 11:25 PM	#7
blk01gt Regular Join Date: May 2007 Posts: 196 iTrader: 0 reviews	When i installed mine the car ran rich as hell and would actually cut off while idling. I fixed it with my Diablo tuner and now it runs great. __________________ 01 Mustang GT \| 5 Speed \| Bullitt Intake \| 4.10's \| Diablo Tuner \| JLT CAI \| Flowtech LT Headers, bbk catted H, dynomax catback \| 01 Carbon Black BMW M3 w/dynomax exhaust

March 27th, 2008, 02:52 AM	#11
jivepepper I Post Entirely Way Too Much Join Date: Mar 2006 Location: Under a sombrero Posts: 5,025 iTrader: 1 reviews	My ran a lot better afterwards. __________________ 665/541 WHP/WTQ 4.6L SOHC 2V ON 93 OCTANE PUMP GAS. NO METH INJ., NO E85, NO RACE GAS, N2O BABY BOTTLES! TRAP=POWER: 11.01 @135, IN SUMMER HEAT, 1350' TRACK, 315/35/17 DR'S

March 26th, 2008, 10:45 PM	#3
RAGEman Enthusiast 1965 Mustang Fastback N/A Join Date: Dec 2007 Location: La Porte, Texas Posts: 819 iTrader: 0 reviews	I just purchased the Percy Gaskets that you were having trouble with. Do you still recommend them? It comes with 4, did you double them up?

March 26th, 2008, 11:18 PM	#6
Ugmul Regular 2002 Mustang GT Join Date: Dec 2007 Location: Tucson Posts: 175 iTrader: 0 reviews	Lol, dont seperate the 2 metal parts on the gaskets. There are 2, not 4, though if you feel you are stronger by spliting one of them into 2 pieces, then, gratz to you! if they came to you seperated, I suggest returning them.

March 27th, 2008, 12:04 AM	#10
Ugmul Regular 2002 Mustang GT Join Date: Dec 2007 Location: Tucson Posts: 175 iTrader: 0 reviews	Im looking at mine right now, its 2 pieces, each piece is 2 gaskets mushed together, at each end its pressed together, can even see a mark where it looks like it was pressed with a heat gun of some sort. Im sure I could pry them apart but package said 2 head gaskets.

March 30th, 2008, 08:56 AM	#12
Hsvcobra99 Newbie 1999 Mustang Cobra conv Join Date: Mar 2006 Location: Canton MI Posts: 7 iTrader: 0 reviews	99 cobra convertible Im thinking of going L/Ts but I also have the Eibach pro springs and Tokico adj struts and shocks, My question is will there be an issue with scraping of the L/Ts with basani x-pipe and maganaflow catback or should I just go mid length

March 30th, 2008, 01:35 PM	#13
Pony Problem Regular Join Date: Mar 2008 Location: Poteau OK Posts: 228 iTrader: 0 reviews	ok..so ive never owned anything but f-bodys...but i just bought 01 gt and the guy gave me a set of coated headers to go with it. Now they have the extensions, but what is this mil eliminators your talkin about? I figure its gunna jack with the way it runs, especially since im gettin rid of the cats when i do the rest of the exaust. So how do i fix this lol __________________ 12 F-Bodys, 3 C5's, a LS3 C6, LS7 Z06, CTS-V, 2 Terminators, a Cobra, 5 GT's, and 26 others. The Toys: Velocity Yellow C6 Z06 Red Line CTS-V The Drivers: Trail Blazer P71 Crown Vic- The DD

March 31st, 2008, 11:30 PM	#15
Pony Problem Regular Join Date: Mar 2008 Location: Poteau OK Posts: 228 iTrader: 0 reviews	ok well the headers i have, have o2's with extensions on them. so all i will need to keep the ses light off is a set of eliminators? __________________ 12 F-Bodys, 3 C5's, a LS3 C6, LS7 Z06, CTS-V, 2 Terminators, a Cobra, 5 GT's, and 26 others. The Toys: Velocity Yellow C6 Z06 Red Line CTS-V The Drivers: Trail Blazer P71 Crown Vic- The DD

March 31st, 2008, 11:32 PM	#16
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,689 iTrader: 3 reviews	Pny Problem. Yes and Rage, the extensions are for the front O2s, and you just need one set. __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

March 31st, 2008, 11:45 PM	#17
the real shocker Hardcore Enthusiast 2002 Mustang GT 13.00 @ 105 Join Date: Feb 2007 Location: Jackson, MS Posts: 1,820 iTrader: 1 reviews	what caused mine (and a few others, why not all i have no clue) to run bad was how far down the 02's were extended. My car ran like a cold natured carb motor on a cold start-up and would nearly buck you out of the car if you set the cruise or held it steady anywhere between 12-1500 rpms. I took it to the tuner b/c my mail ordered tune didnt completely fix the problem. Basically his explanation was when the O2's were moved farther away, the sensors were getting wild readings due to the exhaust cooling off by the time it got there and the computer trying to compensate for it (at least thats what i gathered from it). I have no clue what he did to fix it, but he did... hope that helps bro __________________

March 31st, 2008, 11:48 PM	#18
Pony Problem Regular Join Date: Mar 2008 Location: Poteau OK Posts: 228 iTrader: 0 reviews	hope i dont have that problem because all my friends just have chevy tuing equipment! lol no ford guys round here that i know of __________________ 12 F-Bodys, 3 C5's, a LS3 C6, LS7 Z06, CTS-V, 2 Terminators, a Cobra, 5 GT's, and 26 others. The Toys: Velocity Yellow C6 Z06 Red Line CTS-V The Drivers: Trail Blazer P71 Crown Vic- The DD

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Longtube woes.

Longtube woes.

99 cobra convertible