Some early track results
03-14-2009, 10:02 PM
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Some early track results So I decided to take the car to the track today. The fastest pass of the day was a 12.81. Not really what I was hoping for since I'm shooting for 11s. Did run into some issues like two tranny DTC errors on the first two passes one for TPS voltage low and speed output loss. Then my a/f ratio was erratic. maybe due to my split BLMs even with a BLM locker on my tune my Left LT was stuck at 140+. I'm going to work on getting that fixed and keep messing with the tune to hopefully hit the 11s but don't know if its possible since the mph isn't really there.
RT... .249
60...1.763
330...5.273
1/8...8.179
MPH...84
1000...10.7
1/4...12.818
MPH...106.7
RT... .249
60...1.763
330...5.273
1/8...8.179
MPH...84
1000...10.7
1/4...12.818
MPH...106.7
Last edited by C_Rules; 03-14-2009 at 10:45 PM.
03-14-2009, 10:45 PM
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Heads: stockers ported and polished, 2.02 1.60 vales, 1.6 crane golds rockers, crane springs 135 lbs on the seat
Cam: 224/236 574/572 111 lsa
Stall: Vig 3200
i datalogged the car didn't really notice anything major on the healthy runs.
Cam: 224/236 574/572 111 lsa
Stall: Vig 3200
i datalogged the car didn't really notice anything major on the healthy runs.
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03-15-2009, 09:54 AM
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Yeah, you need to check things out, at 1st. i thought it was a stock bottom end, but a 385, its WAY off, even with that smaller cam, you should be pushing 11s, if not there allready, most likely its in the tune, the fuel tables & timing may be way off, that can easily kill a good second & 7-10 MPH.
03-15-2009, 10:08 AM
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i hear where you're coming from but after looking over everything there may be a mechanical issue. probably due to a leak of some sort either exhaust, vacuum, or a combination of both. check out the attached log and you can see that the O2 mV readings are showing there is a problem. the right O2 is in the 900s after 3,000 rpm while the left is all over the place. at WOT the BLMs which are supposed to be at to 128 are not. The Left Long Term BLM is at 150 which effects the Left Short Term Trim causing little lean spikes. That may explain the erratic a/f. I also have an issue with split BLMs during normal cruising. I'm going to sea foam the car to see if I can find any leaks and swap the O2s around to see if the problem switches sides as well. If so that would mean I need a new left O2 sensor. That would suck because i just bough two new O2s like 3 months ago. Don't know how one would go bad so fast.
..... would spend the money on a tune
03-15-2009, 10:44 AM
#14
Yeah it sounds like something in the tune...Are you willing to have it tuned or at least send the computer out to someone to look at? I'm good at losts of things with these cars but tuning aint one of them...I use Bryan at PCMforless...My cam is 226/234 .568" on a 111 and you see my times/mph in my sig...
--Alan
--Alan