Where's the MPH?
 

Does anyone have any idea why my mph is low and not going up ? I run 113-114 mph with a 11.97-12.00 times. I sprayed 125 wet then upped to 150 wet and found no mph increase.O2 sensors reading
in low .910-.920's,is the stock exhaust holding me back?Just looking for more mph. My best run was
11.97@113 with 1.74 60ft. any ideas? Bye the way i also ran 113 mph with 115 (dry) shot at same track. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

Re: Where's the MPH?
 

ttt

Re: Where's the MPH?
 

DRK-SYD-yes i checked the solenoids. i guess i am more shocked that going from dry kit jetted to 115 horse with a best of 12.24@113 1.84 60ft-then setup as wet kit and jetted to 125horse i ran 12.13@113 1.87 60ft-upped the jet to 150 horse and ran 11.97@113 1.74 60ft. wet kit with no more mph-i am totally stock except free mods and nitrous(even paper filter)with drag radials. With a tech 2 scanner my o2 readings are always above .910 mv.My 1/8 mph did go up from 89 to 91 mph when i use wet setup.I was hoping to trap 115-117,you think it might be exhaust time?

Re: Where's the MPH?
 

definately, throw a cut out on there and you should see a really nice gain. Nitrous loves a free flowing exhaust. ie headers, offroad y-pipe, cutout. good luck. I'd go with the cutout first, for 30 bucks you can't beat it. I had a buddy that made 330 rwhp w/ stock exhaust all the bolt ons and a cam. When he opened the cut out it jumped to 378 rwhp, the stock exhaust was also causing him to detonate.

Re: Where's the MPH?
 

DRK-SYD I'll try that -i like the low cost idea,
sounds good to me. Thanks for the idea. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Re: Where's the MPH?
 

have you checked to make sure that the nitrous solenoid is working..or make sure your jets are correct. If you are just spraying another 25 hp the mph will be low maybe 1-2 mph.

<small>[ October 09, 2002, 12:27 PM: Message edited by: DRK-SYD ]</small>