Installing an h pipe?

b kennedy · 01-31-2001, 07:16 PM

Got a question...I plan on installing an off road h-pipe on my 94 GT...I have no exhaust mods except 2 1/4" flowmasters...I also wanna ditch the stock cats because there are no smog regs where I live but I'm not sure what to get...What do you guys suggest? Thanks for the help!

93CobraR · 01-31-2001, 07:34 PM

Get a MAC or BBK 2 1/2" off-road H-pipe. If you want something a little different get the X-pipe but IMO they aren't worth the extra money.

------------------
87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 13.012
Best MPH 104
Best 60' 1.816

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

b kennedy · 01-31-2001, 08:09 PM

Is this a bolt on piece? Also, what other exhaust parts will I need to bolt my h-pipe up to my headers? Any thing special? I'm basically looking to eliminate the cats... Also, will I still be able to use my 2 1/4" flowmasters with the 2 1/2" h-pipe? Thanks.

[This message has been edited by b kennedy (edited 01-31-2001).]

[This message has been edited by b kennedy (edited 01-31-2001).]

93CobraR · 01-31-2001, 09:50 PM

Yeah, it will botl right up. Just make sure you get the H-pipe for shorty headers and not full length or long tubes. It's a peice of cake to install, takes me about 15 min to swap mine out. Just make sure you have good tools and some WD-40 cause the header bolts that connect to the h-pipe are usually tight or rusted in place, so make sure you don't round off the nuts and have the socket on straight and you have the right size. Other then that your set. You will really like the results that you get. More power and a hell of alot better sound. Oh yeah, it will bolt up to the 2 1/4" flows just fine.

b kennedy · 01-31-2001, 09:59 PM

Thanks bro...Sounds simple enough... Appreciate the help...

b kennedy · 02-01-2001, 12:39 AM

One more thing...Sorry...Do I need to install new 02 sensors? Just wondering cuz I'm not sure if the check engine light will come on without having them on...Thanks again man!

Chris_H · 02-01-2001, 01:05 AM

One other thing you might want to consider when you change out the pipe. Make sure if your bolts are in bad shape, or you end up having to cut the nut off because its rusted or rounded off, that you have extra nuts and bolts. I had to cut my pipe off because some idiot welded the nuts to the bolts, and then realized I didn't have any bolts to hold the pipe up. Those usually come in handy. As far as the O2 sensors, depending on the mileage you have on the current ones, it probably wouldn't hurt to replace them since you will have to swap them to the new pipe anyway. Just my thoughts on this from when I did mine. Good luck!

Chris

------------------
1987 LX, rebuilt 306, Mac shorty headers 1 5/8, 2 1/2" Mac off road h-pipe, 2 1/2" 2 Chamber Flowmasters cat-back, Mac underdrive pullies, 3.55, K&N, Tremec 3550, King Cobra Clutch, Steeda Tri-Ax, Autometer gagues, White face gagues, blue silicone radiator hoses.
Best times:
2.331 60ft, 9.966 @ 71.069 1/8 mile, 15.491 @ 91.846 1/4 mile at 4000 ft. elevation on street tires

01-31-2001, 07:16 PM	#1
b kennedy Registered Member Join Date: Jan 1999 Location: barrigada, guam, usa Posts: 34	Installing an h pipe? Got a question...I plan on installing an off road h-pipe on my 94 GT...I have no exhaust mods except 2 1/4" flowmasters...I also wanna ditch the stock cats because there are no smog regs where I live but I'm not sure what to get...What do you guys suggest? Thanks for the help!

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01-31-2001, 07:34 PM	#2
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	Get a MAC or BBK 2 1/2" off-road H-pipe. If you want something a little different get the X-pipe but IMO they aren't worth the extra money. ------------------ 87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's. Best time 13.012 Best MPH 104 Best 60' 1.816 Visit my site at: http://www.geocities.com/cobrar93_2000/MyPage.html

01-31-2001, 08:09 PM	#3
b kennedy Registered Member Join Date: Jan 1999 Location: barrigada, guam, usa Posts: 34	Is this a bolt on piece? Also, what other exhaust parts will I need to bolt my h-pipe up to my headers? Any thing special? I'm basically looking to eliminate the cats... Also, will I still be able to use my 2 1/4" flowmasters with the 2 1/2" h-pipe? Thanks. [This message has been edited by b kennedy (edited 01-31-2001).] [This message has been edited by b kennedy (edited 01-31-2001).]

01-31-2001, 09:50 PM	#4
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	Yeah, it will botl right up. Just make sure you get the H-pipe for shorty headers and not full length or long tubes. It's a peice of cake to install, takes me about 15 min to swap mine out. Just make sure you have good tools and some WD-40 cause the header bolts that connect to the h-pipe are usually tight or rusted in place, so make sure you don't round off the nuts and have the socket on straight and you have the right size. Other then that your set. You will really like the results that you get. More power and a hell of alot better sound. Oh yeah, it will bolt up to the 2 1/4" flows just fine.

01-31-2001, 09:59 PM	#5
b kennedy Registered Member Join Date: Jan 1999 Location: barrigada, guam, usa Posts: 34	Thanks bro...Sounds simple enough... Appreciate the help...

02-01-2001, 12:39 AM	#6
b kennedy Registered Member Join Date: Jan 1999 Location: barrigada, guam, usa Posts: 34	One more thing...Sorry...Do I need to install new 02 sensors? Just wondering cuz I'm not sure if the check engine light will come on without having them on...Thanks again man!

02-01-2001, 01:05 AM	#7
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	One other thing you might want to consider when you change out the pipe. Make sure if your bolts are in bad shape, or you end up having to cut the nut off because its rusted or rounded off, that you have extra nuts and bolts. I had to cut my pipe off because some idiot welded the nuts to the bolts, and then realized I didn't have any bolts to hold the pipe up. Those usually come in handy. As far as the O2 sensors, depending on the mileage you have on the current ones, it probably wouldn't hurt to replace them since you will have to swap them to the new pipe anyway. Just my thoughts on this from when I did mine. Good luck! Chris ------------------ 1987 LX, rebuilt 306, Mac shorty headers 1 5/8, 2 1/2" Mac off road h-pipe, 2 1/2" 2 Chamber Flowmasters cat-back, Mac underdrive pullies, 3.55, K&N, Tremec 3550, King Cobra Clutch, Steeda Tri-Ax, Autometer gagues, White face gagues, blue silicone radiator hoses. Best times: 2.331 60ft, 9.966 @ 71.069 1/8 mile, 15.491 @ 91.846 1/4 mile at 4000 ft. elevation on street tires