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Thread: 4" DP Dyno

  1. 04-02-2006, 08:02 AM #1
    93H22ACX
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    Default 4" DP Dyno

    Well..its not a really good comparison since i wasnt tuned on the 4" dp and it was just bolted up....

    Boost was spiking up to 30psi and it blew my ebay 90 degree coupler <_< so we had to call it a day..... didnt get a chance to set my boost controller (once it hit 22-25psi it'll spike to 30psi) at all and fuel pressure was mmmm not right either....

    the 4" DP made alot more power up to 80-90mph but once boost spiked...the power was lost....but you can see its like 40-50whp more

    We'll get it tuned again at balance soon so we'll really get a good comparison. Here's the dyno sheet from yesterday and a dyno from Dyno day..both were at Mainstream Performance...

    Thanks to charles and mike for letting me use their dyno....and danny and peter for moral support and fixing my map sensor LOL...


    The lower dyno sheet (615whp) was only reved up to 8500rpm.... the motor is reved up to 9500rpm during races....and this dyno

    Full boost at about 6200-6300rpm
    Last edited by 93H22ACX; 05-23-2006 at 02:10 PM.
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  2. 04-02-2006, 12:51 PM #2
    josh green
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    If i understand the 1st dyno sheet correctly, it looked like it really picked up from 70mph to 120. Of course you said it was spiking to 30 psi but you can tell that its going to help anyway. Whats the sound difference, how much louder or quieter?
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  3. 04-02-2006, 02:34 PM #3
    93H22ACX
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    Quote Originally Posted by josh green
    If i understand the 1st dyno sheet correctly, it looked like it really picked up from 70mph to 120. Of course you said it was spiking to 30 psi but you can tell that its going to help anyway. Whats the sound difference, how much louder or quieter?
    it only hit over 30psi close to 8000rpm or so....not sure what the MPH was...
    even if it got more boost at 70+mph...explainning the power increaes...thats awesome too...means faster spool

    sounds the same LOL


    we'll see how it does after the tune
    Last edited by 93H22ACX; 04-02-2006 at 02:59 PM.
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  4. 04-02-2006, 10:05 PM #4
    josh green
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    Great to hear, who made the 4" exhaust, ISP or mspi, etc...? Hopefully everything will be cherry for you for Valdosta. We should get together some weekend and do some racing.
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  5. 04-02-2006, 11:19 PM #5
    Goinfasterthanu
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    VERY nice!! This on a h22?
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  6. 04-02-2006, 11:53 PM #6
    93H22ACX
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    Quote Originally Posted by josh green
    Great to hear, who made the 4" exhaust, ISP or mspi, etc...? Hopefully everything will be cherry for you for Valdosta. We should get together some weekend and do some racing.
    Import Source Performance....Peter made it.... i'd like to run but alot of $$ will be on the retune but we'll see....

    Quote Originally Posted by Goinfasterthanu
    VERY nice!! This on a h22?
    yeah..its on my h22... everything is out of tune so power output is pretty low..... hopefully i get it retuned soon.

    Here's a pic of the downpipe...mig welded... and my youngest daughter holding it. (she always helps me with the car )

    Last edited by 93H22ACX; 04-03-2006 at 12:06 AM.
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  7. 04-03-2006, 10:36 AM #7
    D16Civic
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    ^that downpipe is as big as she is, haha, thats awesome
    Looking for a shop that does quality work??
    Mainstream Performance is the place to go
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  8. 04-03-2006, 12:06 PM #8
    Goinfasterthanu
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    damn... and i was all happy with my header and cat removal..."runs away"
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