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i have some questions about porting

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Old 12-10-10, 03:47 PM
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i have some questions about porting

how much power can i gain from each respecting port (street, semi peripheral and bridge port)? my power goals are about 190 to 200 to the wheels. im goin more towards a streetport because of the reliability and because its goin to be my DD
Old 12-10-10, 03:51 PM
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you won't get that with a street port, a bridge port yes but you'll get crap gas millage and will be loud, but some people do drive their 7's with a bridgeport on a day to day basis. if its just going to be a DD than street port is best.
Old 12-10-10, 04:14 PM
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the Renesis can do that with bolt ons
Old 12-12-10, 01:40 PM
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i saw i site a long time ago describing the kind of ports does anyone have a similar site? and how much to the wheel would i get wit a bridge port?
Old 12-12-10, 01:56 PM
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bridgeport requires a standalone EMS, which run about $1500 on top of your rebuild and porting costs.

bridgeports don't eat engines or cut into their longevity much, that is a myth.

Last edited by RotaryEvolution; 12-12-10 at 01:59 PM.
Old 12-12-10, 02:05 PM
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damm dats a little more than i have to spend how much whp will a large streetport get me?
Old 12-12-10, 02:18 PM
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without a tunable ECU? about 165ish with supporting intake and exhaust mods.
Old 12-12-10, 02:28 PM
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Originally Posted by Karack
without a tunable ECU? about 165ish with supporting intake and exhaust mods.
damm i though it would be a little more than 165whp what kind of tunable ecu would be the best for this? thanks for the help
Old 12-12-10, 03:05 PM
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Rtek 2.1 is the cheapest for the n/a, if you learn to tune it yourself. haltech/microtech/PowerFC all have their pros and cons for tuners and can manage similar results for real standalones that omit the antique AFM.
Old 12-12-10, 03:09 PM
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Originally Posted by Karack
Rtek 2.1 is the cheapest for the n/a, if you learn to tune it yourself. haltech/microtech/PowerFC all have their pros and cons for tuners and can manage similar results for real standalones that omit the antique AFM.
ok thanks man for the suport
Old 12-18-10, 12:01 PM
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would rtek be able to suport a bp?
Old 12-18-10, 12:24 PM
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Originally Posted by rx7fcfc
would rtek be able to suport a bp?
I dont think it has been done before, so cant really say.
Though, I dont see why not, it probably can run it and do well.

Though I would think the MAF restriction will pose a problem since the Rtek requires the MAF to be there, many standalones use Map sensors instead of the MAF, which is better since it doesnt restrict airflow.
Old 12-18-10, 12:30 PM
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Originally Posted by Black Knight RX7 FC3S
I dont think it has been done before, so cant really say.
Though, I dont see why not, it probably can run it and do well.

Though I would think the MAF restriction will pose a problem since the Rtek requires the MAF to be there, many standalones use Map sensors instead of the MAF, which is better since it doesnt restrict airflow.
how about if i mod da maf a little for better air flow and make it run rich?
Old 12-18-10, 02:07 PM
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Originally Posted by arghx
the Renesis can do that with bolt ons
I was thinking about those in a fc the other day... A good powerband, decent fuel economy, 9000 rpms, and still rotary...

Wonder how hard that would be to run on the oem rx8 electronics... Think I'll look into it.
Old 12-18-10, 02:23 PM
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problem with bridgeports is they have such bouncy airflow rates at idle and mid range that the AFM reacts too slowly to compensate for the airflow correctly.
Old 12-18-10, 02:38 PM
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Originally Posted by Karack
problem with bridgeports is they have such bouncy airflow rates at idle and mid range that the AFM reacts too slowly to compensate for the airflow correctly.
do u mean to slow as to send the signal to the ecu or adjust the air fuel mixture?
Old 12-18-10, 03:16 PM
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everything, even standalones have a tough time with the overlap where low vacuum crosses over into load at low RPMs. basically the ECU thinks the engine isunder a load when it is simply idling, when it does actually go into load it is then too lean. the faster the electricals react, the better.
Old 12-18-10, 03:23 PM
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Originally Posted by Karack
everything, even standalones have a tough time with the overlap where low vacuum crosses over into load at low RPMs. basically the ECU thinks the engine isunder a load when it is simply idling, when it does actually go into load it is then too lean. the faster the electricals react, the better.
oh ic i think its just gonna be alot simpler to just go wit a large streetport and rtek where can find some info other the the rtek website about how to program rtek?
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