89 Vs 68

Skyman · 02-13-2002, 06:37 AM

Well I put my new MAC Cat Hpipe on and my car is SLOW as hell!

Somethings wrong, I hope, I can't figure it out.

I knew my car was super slow feeling so I went to race my cousins 68 mustang.

It trapped 99.5mph before the electric fan, so I figure its about 100-101mph now.

I pulled him a car off the line just because of better traction, but after that we were dead even.

Neither one of us could pull on the other, exact same power.

So I am trapping 100 now.

WTF.

Check my post in Windsor power, Hpipe vs stock, vs offroad.

Skyler

exgmguy · 02-13-2002, 07:35 AM

Damn!!! Check to see if the cats a glowing red at all after driving for a while. Maybe they are clogged.

sedanman · 02-13-2002, 10:17 AM

Man, that sucks bad! Something is definately astray.

StoplightWarrior · 02-13-2002, 04:58 PM

First let me say that I hate Mac. With that said, when I put the Mac hiflo H on the 94 cobra, the car felt much stronger. You did the install yourself, right? I dont know if the foxes were the same, but did you hook up all the smog stuff correctly, cause that's where I had the most trouble.

blue00gt · 02-13-2002, 05:22 PM

It does sound like your cats are plugged. I was having a similar problem on my 2000; it made low- and mid-range power just fine, but over 4000 the power started to drop and it wouldn't even rev over 5200 rpm! I took it to Ford and the test they ran indicated excessive backpressure in the exhaust.

89cp · 02-14-2002, 02:25 PM

Hook up a vacuum gauge and check to see if there is a restriction. If you don’t hit zero inches at WOT, you’ve got a restriction.

Good Luck

Skyman · 02-15-2002, 03:37 AM

Yeah I will have to hook up a vacume gague, but how can I hit WOT while its sitting still?

Just stab it for a second?

Skyler

SaleenGTS · 02-15-2002, 11:04 PM

Dang Sky, that does suck....is that the only difference? The exhaust? You need to aso be carful, because my buddy had clogged cats on his 94 and he ended up clogging some valves on his heads with carbon. You need to go offroad :P Good Luck!

89cp · 02-16-2002, 02:15 AM

Skyman,

Hook up the gauge so that you can see it from inside the car, then go out for a test run(s). Try to glance over at the gauge when you're at WOT. You want to see zero.

Have Fun.

Skyman · 02-16-2002, 03:00 PM

Well I Figured it out!

I reset my computer and the car runs like a champ again! Just as much power as before.

I guess it just had to clear its head

lol

Im stoked.

Skyler

lx mike · 02-16-2002, 03:57 PM

Quote:

I reset my computer and the car runs like a champ again

why can't all problems be fixed like this??

glad to see thing are back to where they was.

1BAD89 · 02-17-2002, 02:28 AM

Glad to hear you got it fixed!

02-13-2002, 06:37 AM	#1
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	89 Vs 68 Well I put my new MAC Cat Hpipe on and my car is SLOW as hell! Somethings wrong, I hope, I can't figure it out. I knew my car was super slow feeling so I went to race my cousins 68 mustang. It trapped 99.5mph before the electric fan, so I figure its about 100-101mph now. I pulled him a car off the line just because of better traction, but after that we were dead even. Neither one of us could pull on the other, exact same power. So I am trapping 100 now. WTF. Check my post in Windsor power, Hpipe vs stock, vs offroad. Skyler __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

02-13-2002, 10:17 AM	#3
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	Man, that sucks bad! Something is definately astray. __________________ 04 Screamin Yellow Cobra KB 2.4 (585/556 pump 626/666 race) 00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff. GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.

02-13-2002, 04:58 PM	#4
StoplightWarrior Registered Member Join Date: Jun 2000 Location: Nor-Cal Posts: 1,311	First let me say that I hate Mac. With that said, when I put the Mac hiflo H on the 94 cobra, the car felt much stronger. You did the install yourself, right? I dont know if the foxes were the same, but did you hook up all the smog stuff correctly, cause that's where I had the most trouble. __________________ Black 2000 GT Auto V2-SQ, Full Steeda G-trac Suspension, Baer Brakes, Saleen Body Kit, Corbeau CR1s, Chrome Cobra R's, etc, etc... 341rwhp, 338 torque 1994 Cobra #4343 Bolt on's only... Cofounder of Raccoon Racing

02-13-2002, 05:22 PM	#5
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	It does sound like your cats are plugged. I was having a similar problem on my 2000; it made low- and mid-range power just fine, but over 4000 the power started to drop and it wouldn't even rev over 5200 rpm! I took it to Ford and the test they ran indicated excessive backpressure in the exhaust. __________________ Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s

02-15-2002, 03:37 AM	#7
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Yeah I will have to hook up a vacume gague, but how can I hit WOT while its sitting still? Just stab it for a second? Skyler __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

02-13-2002, 07:35 AM	#2
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	Damn!!! Check to see if the cats a glowing red at all after driving for a while. Maybe they are clogged.

02-14-2002, 02:25 PM	#6
89cp Registered Member Join Date: Jan 2001 Location: _ Posts: 35	Hook up a vacuum gauge and check to see if there is a restriction. If you don’t hit zero inches at WOT, you’ve got a restriction. Good Luck

02-15-2002, 11:04 PM	#8
SaleenGTS RICE taste like Chicken Join Date: Jun 2000 Location: Edmond, OK Posts: 687	Dang Sky, that does suck....is that the only difference? The exhaust? You need to aso be carful, because my buddy had clogged cats on his 94 and he ended up clogging some valves on his heads with carbon. You need to go offroad :P Good Luck! __________________ Dustin 89 Saleen GT Sport Supercharged 306 Started her up 6/8/03 Old Motor Supercharged 347 516 rwhp 553 rwtq 11.249@126.83 1997 Honda CBR 1100XX Super Blackbird 162 hp

02-16-2002, 02:15 AM	#9
89cp Registered Member Join Date: Jan 2001 Location: _ Posts: 35	Skyman, Hook up the gauge so that you can see it from inside the car, then go out for a test run(s). Try to glance over at the gauge when you're at WOT. You want to see zero. Have Fun.

02-16-2002, 03:00 PM	#10
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Well I Figured it out! I reset my computer and the car runs like a champ again! Just as much power as before. I guess it just had to clear its head lol Im stoked. Skyler __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

02-17-2002, 02:28 AM	#12
1BAD89 Tubbed and Juiced Join Date: Mar 2001 Location: Tulsa, Oklahoma Posts: 1,861	Glad to hear you got it fixed!