Dyno #'s or Track #'s with true duals..
Re: Dyno #'s or Track #'s with true duals.. 1.5 tenth gain, by switching exhaust (at the track) to duals wuth bullets, from a 3" Y to flowmaster collector 3 to 3.5, to 3.5 pipe with a cutout.
That was when the car was just bolt ons.
That was when the car was just bolt ons.
Re: Dyno #'s or Track #'s with true duals.. Well, I added a pulley about the same time as true duals, but still figure I picked up about 5-10 rwhp over a 3" Y over the axle and !catback. My dual exhaust is 2.5" Dr. Gas X with 12" bullet dumps. Most notable on the dyno is the nice flat hp curve. I'm at near peak power from 5300 to 6300 rpm. Looks like a torque line. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
At the track it's hard to say. I ran 11.99 in perfect weather, -700 DA. Since then, with the true duals and a pulley, I've run many 12.04's and 12.05's in +1000 to +1200 DA's. So, I won't know true track gains until cooler weather comes back.
<small>[ July 02, 2002, 09:25 AM: Message edited by: Lane ]</small>
At the track it's hard to say. I ran 11.99 in perfect weather, -700 DA. Since then, with the true duals and a pulley, I've run many 12.04's and 12.05's in +1000 to +1200 DA's. So, I won't know true track gains until cooler weather comes back.
<small>[ July 02, 2002, 09:25 AM: Message edited by: Lane ]</small>
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Re: Dyno #'s or Track #'s with true duals.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Jsears8:
<strong>Excellent results guys! I think I will do true duals now. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Justin</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It's not like we twisted your arm or anything <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
If you decide to dump em b4 the axles you get the benefit of weight savings from not having a catback...and a much smoother exhaust flow path.
<strong>Excellent results guys! I think I will do true duals now. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Justin</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It's not like we twisted your arm or anything <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
If you decide to dump em b4 the axles you get the benefit of weight savings from not having a catback...and a much smoother exhaust flow path.
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Re: Dyno #'s or Track #'s with true duals.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> If you decide to dump em b4 the axles you get the benefit of weight savings from not having a catback...and a much smoother exhaust flow path. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Justin with a cat-back? I never seen him make a pass with one on his car. It's always lying beside those beautiful wheels(that I never seem to be able to steal). LOL
I want a true dual set up BAD!!!!!!!!!!
Josh S.
I want a true dual set up BAD!!!!!!!!!!
Josh S.
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Re: Dyno #'s or Track #'s with true duals.. hehehe, it won't be much of a weight savings for me, huh Josh? <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
I'm thinking a want a different set of wheels again so maybe you can have my old ones. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Later man,
Justin
I'm thinking a want a different set of wheels again so maybe you can have my old ones. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Later man,
Justin
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Re: Dyno #'s or Track #'s with true duals.. I gained about 12rwhp/12rwtq by going from a 3" ypipe and 3" catback w/ blowmaster muffler to a dual 3" true dual.
As far as dyno figures go, I think the true dual is what makes me able to dyno over 370rwhp/380rwtq with just bolt ons, through a 33 spline 12 bolt and 3.73 gears.
The true dual is part of the reason I dyno more that other bolt on cars IMO (that and I have almost all the bolt ons in the book <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> )
As far as track numbers go <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" />
I ran a 12.5@112.6 1.9x 60 ft. on drag radials last winter with 15rwhp/15rwtq less than what I have now, and a 10 bolt and z06 clutch.
I now posses a 12 bolt, Mcleod clutch package, and slicks, and with the extra 15rwhp/15rwtq.....I hope to hit a 12 flat@112mph this winter on slicks
I'm doing it at 1500ft and density altitudes are never under 2000ft.
<small>[ July 02, 2002, 03:45 PM: Message edited by: verbs ]</small>
As far as dyno figures go, I think the true dual is what makes me able to dyno over 370rwhp/380rwtq with just bolt ons, through a 33 spline 12 bolt and 3.73 gears.
The true dual is part of the reason I dyno more that other bolt on cars IMO (that and I have almost all the bolt ons in the book <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> )
As far as track numbers go <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" />
I ran a 12.5@112.6 1.9x 60 ft. on drag radials last winter with 15rwhp/15rwtq less than what I have now, and a 10 bolt and z06 clutch.
I now posses a 12 bolt, Mcleod clutch package, and slicks, and with the extra 15rwhp/15rwtq.....I hope to hit a 12 flat@112mph this winter on slicks
I'm doing it at 1500ft and density altitudes are never under 2000ft.
<small>[ July 02, 2002, 03:45 PM: Message edited by: verbs ]</small>
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Re: Dyno #'s or Track #'s with true duals.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Lane:
[QB]Most notable on the dyno is the nice flat hp curve. I'm at near peak power from 5300 to 6300 rpm. Looks like a torque line. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
[QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I agree!! My dyno before I added the Shaner Stage 2 TB shows a flat hp power band above 5000rpm.... on this chart I had over 350rwhp from 5000rpm-6300rpm or so. Most bolt on car dynos are much peakier IMO.
<img src="http://www.nissaninfiniticlub.net/vbulletin225/attachment.php?s=&postid=194" alt=" - " />
<small>[ July 02, 2002, 12:23 PM: Message edited by: verbs ]</small>
[QB]Most notable on the dyno is the nice flat hp curve. I'm at near peak power from 5300 to 6300 rpm. Looks like a torque line. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
[QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I agree!! My dyno before I added the Shaner Stage 2 TB shows a flat hp power band above 5000rpm.... on this chart I had over 350rwhp from 5000rpm-6300rpm or so. Most bolt on car dynos are much peakier IMO.
<img src="http://www.nissaninfiniticlub.net/vbulletin225/attachment.php?s=&postid=194" alt=" - " />
<small>[ July 02, 2002, 12:23 PM: Message edited by: verbs ]</small>
