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Old 01-13-2007, 01:00 PM   #1
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3" exhaust queston for Tom

Hey tom, I know you have stated that there are good gains to be made from a 3" exhaust on an n/a svt- my question is, does this take away from the bottom end power or is it across the entire rpm range? also do you have a before and after dyno of switching to a 3" that you or anyone else who has this could post, if not what kinda numbers are we talking about with this setup- also do you have a program/tune for the predator for a 3" exhaust. Thanks any info will be greatly appreciated- by any and all who contributes- thanks again


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Old 01-13-2007, 04:53 PM   #2
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I dont have the dyno on this computer , dont remember the gain but think it was in the 7 to 9 hp range will try to get on the dyno and find it

Yes i have a tune for the 3 inch

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Old 01-14-2007, 12:16 PM   #3
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cool- post it when you get a chance i'd really appreciate it- thanks, also is that across the entire rpm range or at the top end or do you lose low end power at all?
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Old 01-14-2007, 04:05 PM   #4
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Would like to see the dyno as well.
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Old 01-14-2007, 04:10 PM   #5
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I am in the same boat as Tom on this one, a 3" exhaust does an engine good even on NA. I have it and besides the obvious power gains the 3" just sounds better
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Old 01-14-2007, 09:14 PM   #6
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Yes you will see gains but only after like 4500 rpm. Youll get horrible gas milage if you drive lowend though
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Old 01-14-2007, 09:21 PM   #7
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I wouldn't say that. I still get 28mpg on the highway with my 3" and everything that is done to my car. I even stay above 20 when i've been messing around and doing alot of city driving I think thats pretty good
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Old 01-14-2007, 09:39 PM   #8
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I got 37 mpg before I started to go goofy with it adding more mods.
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Old 01-15-2007, 06:48 AM   #9
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Quote:
Originally Posted by PAPI View Post
Youll get horrible gas milage if you drive lowend though
Theres no way you can back up a statement like that.......

I ran 3" on mine for Months prior to getting the turbo installed, it had more power... even down low and it did not effect the milage.
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Old 01-15-2007, 06:50 AM   #10
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Quote:
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Yes you will see gains but only after like 4500 rpm. Youll get horrible gas milage if you drive lowend though

Not at all , low end wasent hurt at all from what i remember , I start my Dyno runs from 2000 on and from what i remember there was no loss and im thinking a gain from 2000 on with going to 3 inch

Im leaving for Co. early in the morning to tune a Focus and will try to find this dyno when i return

Tom
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