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  #1  
Old 10-18-2006, 11:31 PM
swinsoneric swinsoneric is offline
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Straight pipe

How much of a difference would it make if i was to straight pipe my 1998 v6 malibu ?
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Old 10-18-2006, 11:36 PM
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Re: Straight pipe

Straight pipe could actually hurt engine performance. You need a little back pressure in the exhaust.
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Old 10-19-2006, 07:42 AM
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Re: Straight pipe

so are you suggesting that i don't do it, if so what can i do to the exhaust system for a little more speed ?
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Old 10-19-2006, 08:21 AM
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Re: Straight pipe

you can get high flow catalytic converts and after market exhaust systems. Probably a cold air system might help a little, it replaces your air box with a slightly longer intake to the throttle body,. Then uses a K and N type air filter on the other end. You probably will see a very slight horsepower / miles per gallon increase.
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Old 10-19-2006, 10:35 AM
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Re: Straight pipe

Agree'd. My best bang for the buck was a FWI, larger TB and free'er flowing exhaust.
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Old 10-19-2006, 12:52 PM
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Re: Straight pipe

i have a cold air intake with the k&n filter but i was just wondering about taking the muffler out and straight piping it. It's not something major that i have to have done i was just wondering about it because a friend of mine brought a crown victoria and it was straight pipe and it runs like a bat out of hell
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Old 10-19-2006, 01:02 PM
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Re: Straight pipe

A crown vic is going to smoke a malibu, straight pipe or not, so that's not really a good comparison. I'm assuming you still have the stock catalytic converter installed? Deleting the stock muffler isn't going to make any difference in power or fuel mileage. The best way to do it would be a high-flow cat, and an aftermarket cat-back system.
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Old 10-19-2006, 01:25 PM
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Re: Straight pipe

Who was comparing a malibu and a crown vic, i said that i know a guy that has his crown straight pipe. Any body with common sense knows that a malibu can't run with a crown. Thank you for the insight.
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Old 10-20-2006, 12:12 AM
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Re: Straight pipe

Well, I was just saying your used to a malibu, and a Vic will run anyway, but I see your point.
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Old 10-20-2006, 08:27 AM
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Re: Straight pipe

Quote:
taking the muffler out and straight piping it.
If you take the cat out, what about inspection time ? also your post 02 sensor. ?

Quote:
larger TB
where do you go to get those, do you also have to use a cold air pr aftermarket intake / filter ?

... another way to gain extra HP which applied more when I had Motorcycles is for the driver to lose 40 lbs
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Old 10-20-2006, 11:37 AM
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Re: Straight pipe

Corning, do u have a malibu ?
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Old 10-22-2006, 04:57 PM
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Re: Straight pipe

I've got a 3100 Monte Carlo, with a 3400 top-end.
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Old 10-22-2006, 09:19 PM
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Re: Straight pipe

O.K so if u had about 300 to spend what would you do to a malibu for speed .....Corning ?
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Old 10-22-2006, 10:46 PM
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Re: Straight pipe

Well, I got a ~$100 high-flow cat, and a ~$100 Delta 40 series Flowmaster, and went from the manifold collector all the way back with 2 and a 1/2" pipe. Labor and parts was ~$250-$275. I don't have a dyno at the moment(one on the way) but I'll test stock vs. my setup and see the gains. If I had to guess, I'd say I free'd up around 10hp.
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Old 10-23-2006, 06:59 AM
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Re: Straight pipe

Quote:
I've got a 3100 Monte Carlo, with a 3400 top-end
what does the "top end" include ?
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