Exaust component questions(updatedX2).... - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 09-04-2007, 04:25 PM   #31
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Just so you know, you're really not going to have to worry about flow for a long while. The general consensus around here is until your car is running faster than 13 seconds, you're not even outflowing your stock mufflers yet.

But MagnaFlow is a good brand. You shouldn't be disappointed.
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Old 09-05-2007, 02:02 AM   #32
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o'rly? i wasnt sure. on my fireturd, the stock exaust was quiet as heck, and wasnt that good. so i put a hole in it. with this car, im not gonna do a lot, so i guess im just going for different sound and slight performance.
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Old 09-05-2007, 09:40 PM   #33
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FWIW regarding flow....my car ran a 13.29 @105 last year running TOG headers, 3" DP into the STOCK cat...into the STOCK resonator and finally through STOCK mufflers.
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Old 09-05-2007, 11:42 PM   #34
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hmmm....well, i may just get the hiflow cat/dp. i need to do that at least, its rattleing and starting to make the car run rough. im still going to put on different tips on, too.
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Old 09-18-2007, 02:38 AM   #35
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ordered the downpipe/hiflow cat assembly today. now to find an exaust shop to put it in. anybody ever have problems with the bolts for the manifold/downpipe? thats all im scurred of right now.
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Old 09-18-2007, 03:02 AM   #36
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If you're comfortable changing your sparkplugs you can put that dp on. If you have a jack and jack stands save your self the money and install it yourself.

I forget what the stock manifold to dp bolts look like.


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Old 09-18-2007, 05:28 AM   #37
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m'eh, i would if i had a welder and welding skill. i havent welded since middle school shop class(we used rivets and epoxy in aerotech )
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Old 10-01-2007, 06:13 PM   #38
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UPDATE: i took it to an exhaust shop, they cut the old assembly off and tried to put on the Hogan exhaust one. the o2 sensor bung was a bit off. after talking to curt, he said that they(GM) put the L36 Catalytic converter in. Also, the meineke guy was concerned because the pipe(the bent part above the flex piece) was touching the foil/insulation underneath, and it wasn't even bolted down yet. Curt is making me another that has the correct o2 sensor location. anybody else have clearance issues with the 3" downpipes? if the new one is touching too, should I be concerned?
edit: would having a cat made for a n/a car cause it to have the problems I'm having with this one? the supercharged cars put out more exhaust than the n/a ones,right?(especially if you put an overdrive pulley on the supercharger/FWI on?)
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Old 10-04-2007, 01:50 AM   #39
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Quote:
anybody else have clearance issues with the 3" downpipes? if the new one is touching too, should I be concerned?
anyone? bueller?
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Old 10-13-2007, 04:44 AM   #40
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finally got it put on. YAY! no more rattling when i start the car, but im still having problems. im gonna check some other options.
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