Headed back to the dyno after mods
4/30/05, 01:06 PM
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I have an appointment for a few dyno pulls in 1 hour, I plan to make at least three pulls with different tunes to find my optimum tune for the drag strip and street. My first pull on the dyno was with less than 1000 miles and the only mods were the MMR intake and some JBA axle back mufflers and no tune to correct A/F. I nettted 273 rwhp. I will be back after the pull to post my gains.
4/30/05, 01:54 PM
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I'd like to see how you do Dereck. From what I experianced, one of the key's to geting your HP is getting your spark advance at 33-34 degree's at WOT... While at the same time keeping your A/F ratio around 12.9:1 at WOT. Hope it goes well for you! 
4/30/05, 03:40 PM
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Looking forward to hearing the results as well.....yesterday's track date has me leaning toward doing some more work to quicken mine up. All I've been doing is taking it to car shows the past few months...LOL
4/30/05, 03:50 PM
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Well, here are the results. Sorry I don't have a scanner so black and white will have to do unless I can get a good digital photo.
Run conditions: 68.07 degrees F, 28.90 in-Hg, SAE: 1.01, Dynojet.
Max rear wheel horsepower= 295.27
Max rear wheel torque= 310.26
A/F measured at the H-pipe was pretty consistently 13.6:1
I used a "canned" tune from MDmotorsports that is made for the MMR Intake, I was running 93 octane fuel with an 87 octane tune. I allowed the engine to cool for the final run that produced the most hp wich proved to be good for about 5 hp and 10 ft/lb of torque.
Original numbers DIN showed 303 rwhp and 318 rwtq. As you know though the SAE numbers should be the ones to compare against other dyno pulls.
Run conditions: 68.07 degrees F, 28.90 in-Hg, SAE: 1.01, Dynojet.
Max rear wheel horsepower= 295.27
Max rear wheel torque= 310.26
A/F measured at the H-pipe was pretty consistently 13.6:1
I used a "canned" tune from MDmotorsports that is made for the MMR Intake, I was running 93 octane fuel with an 87 octane tune. I allowed the engine to cool for the final run that produced the most hp wich proved to be good for about 5 hp and 10 ft/lb of torque.
Original numbers DIN showed 303 rwhp and 318 rwtq. As you know though the SAE numbers should be the ones to compare against other dyno pulls.
4/30/05, 04:32 PM
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Justin, I don't know how to check spark advance. I can change some things with my tune with my home pc. I can change wide open throttle timing up 2 more degrees and and I can change air fuel mixture up to 15% up or down at wide open throttle, all of this bieng over the tune sent to me by MDmotorsports.
4/30/05, 06:15 PM
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Originally posted by dhof303@April 30, 2005, 4:35 PM
Justin, I don't know how to check spark advance. I can change some things with my tune with my home pc. I can change wide open throttle timing up 2 more degrees and and I can change air fuel mixture up to 15% up or down at wide open throttle, all of this bieng over the tune sent to me by MDmotorsports.
Justin, I don't know how to check spark advance. I can change some things with my tune with my home pc. I can change wide open throttle timing up 2 more degrees and and I can change air fuel mixture up to 15% up or down at wide open throttle, all of this bieng over the tune sent to me by MDmotorsports.
4/30/05, 06:16 PM
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LOL thanks Kluski....put a few of her on last page of my Car Domain too...good numbers and ideas on this thread. Thanks for the advice on the spark too Jay....every little bit helps! Hope we're all making well over 300hp and running 12's very soon!!!!
John
John
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