BreakYaNeckSS Posted October 15, 2007 Report Share Posted October 15, 2007 so i hit the track sunday...only got one pass in... 13.15 @ 99....my 60' was 1.768 and RT was .719 so ihad a good launch and good 60' but after 3rd shes just stopped pulling, my Mods are in the Sig and are all installed...im gonna head back sunday night and take the tailgate off and remove the front headlight, and hopefully snag a good R/T on the tree to put me into the 12's..but other than that...does it seem right with the mods i have to be running the times i ran...may be she needs a retune...any advice boys..??? BYN R/T .719 60' 1.768 330 5.250 1/8 8.234 MPH 80.75 1000 10.890 1/4 13.158 MPH 99.09 Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted October 16, 2007 Report Share Posted October 16, 2007 im sure some of the other radix guys will chime in but r/t has nothing to do with your et/mph/60 ft. etc. Quote Link to comment Share on other sites More sharing options...
Black2003SS Posted October 16, 2007 Report Share Posted October 16, 2007 You might be seeing some late 3rd gear KR. Did you scan the run? Do you scanning software? Without that, it is nearly impossible to find the trouble spots. Your 60' looks really good, not a whole lot of improvement there. However, I would expect your mph to be about 2-3mph higher with the pulley you have and the LT headers. If you have 2*+ of KR throughout 3rd and you say it "stops pulling", that can cost you 1-2 tenths. Also, it would be interesting to see what your intake temps are in 1st vs 3rd gear to see how efficient your intercooling is. Quote Link to comment Share on other sites More sharing options...
CNE Posted October 17, 2007 Report Share Posted October 17, 2007 RT has nothing to do with your ET. The ET starts when you move. Quote Link to comment Share on other sites More sharing options...
BreakYaNeckSS Posted October 18, 2007 Author Report Share Posted October 18, 2007 well i need to hear from my performance shop if they ever return my call....see what they have to say, i took to the tracks last night for a few more runs but i didnt let it cool off after the 25 min ride up there so the best i did was a 13.2 @97...even when i ran sunday with a 13.1 it was warm....im gonna throw a few bags of ice in the blower right up untill i run...another thing i noticed is around 80MPH she starts to stutter really bad, thats around the same time it stops pulling....i hope its in the tuning i mean WTF its 2 tenths, it will make me a happier man if i can break it... BYN Quote Link to comment Share on other sites More sharing options...
Holty Posted October 18, 2007 Report Share Posted October 18, 2007 My opinions: 1. your times arn't really that bad. Pull out your subwoofers, tailgate, and spare tire and you'll be running 12.80's 2. stuttering does not sound good, either you are running lean, or the pcm is pulling alot of timing (kr). get that checked asap. Quote Link to comment Share on other sites More sharing options...
Black2003SS Posted October 18, 2007 Report Share Posted October 18, 2007 Or his stuttering condition is that weird torque converter lockup issue some of us have had... Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted October 18, 2007 Report Share Posted October 18, 2007 RT has nothing to do with your ET. The ET starts when you move. Quote Link to comment Share on other sites More sharing options...
BreakYaNeckSS Posted October 19, 2007 Author Report Share Posted October 19, 2007 aright i know that the R/T has nothing to do w/ the et so let put that one to rest. also, i already dropped the hitch assembly spare tire, took off my tailgate and removed my subs...13.1...... Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted October 19, 2007 Report Share Posted October 19, 2007 My opinions: stuttering does not sound good, either you are running lean, or the pcm is pulling alot of timing (kr). get that checked asap. sounds like a KR issue to me Quote Link to comment Share on other sites More sharing options...
cadowns Posted October 19, 2007 Report Share Posted October 19, 2007 There must be some sort of tuning issue here. I run 13.7's with my mild set up and my 1/8 mile MPH is two MPH better. I think it is time for some serious logging to be done. You are .5 sec better than me but equal speed at the 1/4 mile. Sounds like a lot of timing being pulled at the 1/8 and on. Launch is good so the HP is there off the line. CD Quote Link to comment Share on other sites More sharing options...
RacerJJ Posted October 19, 2007 Report Share Posted October 19, 2007 Mine didn't stutter at all when my converter was locking too early so I don't think that's it. Could KR be why my truck sounds so low to me on the track after the LT install? I have my sensor sensitivity turned waaaaay down to prevent false knock since I run race gas so I shouldn't be getting any. Quote Link to comment Share on other sites More sharing options...
SSThunder Posted October 19, 2007 Report Share Posted October 19, 2007 I've got similar issues with my last 1/8 run. When I get the time I'm going to log lots of stuff and get my issues worked out. It's my fault I haven't gotten it fixed yet. I'll have lots of time for my truck starting next week. Quote Link to comment Share on other sites More sharing options...
PladdPezzPunk Posted October 19, 2007 Report Share Posted October 19, 2007 try running a little more air pressure in the tires to get a bit of slip off the line. this works really well with awd trucks. Quote Link to comment Share on other sites More sharing options...
thomp62301 Posted October 19, 2007 Report Share Posted October 19, 2007 try running a little more air pressure in the tires to get a bit of slip off the line. this works really well with awd trucks. i've tried this numerous times and it really works. i get better time slips when i spin off the line. i usually air the tires up to around 55-60 lbs or so before i head to the track Quote Link to comment Share on other sites More sharing options...
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