RE: Bolt-on without tune
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RE: Bolt-on without tune - 2/15/2008 12:01:46 PM
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EMonz57
Posts: 11262
Joined: 5/13/2005
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quote:
ORIGINAL: XTREME
If you have a stock Evo and you purchase just an intake and exhaust you shouldn't have any problems. For around a year my brother and I, on both our Evo's, had an injen intake and full exhaust with a test pipe and had no problems.
It can cause fuel cut, I had fuel cut left and right. and it will make you run more rich which stock these cars run rich ass balls. You can do it but your better off just getting a tune
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1993 Renn Red Supra Turbo 6spd
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RE: Bolt-on without tune - 2/15/2008 1:35:25 PM
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Mike21
Posts: 178
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Cool, thanks for the info, I knew for sure that mods don't mean much without a tune but I wasn't sure that even the simple basic mods like intake and exhaust would really cause your car to run rich. I guess under certain circumstances you would be ok without a tune with the basic stuff.
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2005 Mitsubishi Evolution VIII GSR
MySpace/mike2586
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RE: Bolt-on without tune - 2/15/2008 1:36:11 PM
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Evo2nv
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Ya a tune on a stock evo i've seen put down like 20 extra whp and thats more then any intake or exhaust will get you.
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RE: Bolt-on without tune - 2/15/2008 2:03:17 PM
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Mike21
Posts: 178
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Since we are on the subject of running rich and getting tuned, I got a question. When I moved to Colorado, my stock exhaust sounded crappy, like it was sputtering all the time, but the RPM needle did not jump around at all. Now I got a borla 3" catback exhaust and can’t really hear much of the sputtering from the exhaust. Could the reason for the sputtering be due to me moving in a climate with high altitude? Cause I moved from Illinois, which has the climate setting of low altitude. Colorado, on the other hand is a high altitude state which equals to low atmospheric pressure. My CEL came on only once for about 30min. Could it be that my ECU had not adjusted to the new atmospheric setting and my car is running rich or something?
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2005 Mitsubishi Evolution VIII GSR
MySpace/mike2586
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RE: Bolt-on without tune - 2/15/2008 2:40:08 PM
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EMonz57
Posts: 11262
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When you change elivation yes it will effect the tune. However the Ecu will relearn what it has to work with. it takes like 100 miles or so for the Ecu to reset itself.
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1993 Renn Red Supra Turbo 6spd
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RE: Bolt-on without tune - 2/15/2008 3:37:27 PM
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Mike21
Posts: 178
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Cool, I got ya. Just seemed to me that it wasn't reseting itself but once I get the rest of my exhaust pieces, and a few more things put on i'll get it tuned. Oh and do u think getting my exhaust manifold ported by Muse would show imporvement?
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2005 Mitsubishi Evolution VIII GSR
MySpace/mike2586
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RE: Bolt-on without tune - 2/15/2008 5:30:28 PM
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Rob
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From: VT
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Actually, it is highly advisable to get a tune after installing a full intake. 10/10 people will tell you to just get the maf adapter and a filter until later tuning. They say the exhaust is fine without a tune. Or if you're tuned and then instal an exhaust you won't need a re-tune.
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Rob/03 RR Lancer Evolution VIII
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