Hello, I have a 99 TA that is driving me nuts. I cant break into the 12's but I know the car can do it. Its first time at he track, It had a catback with no name on it any where. Volant cold air intake and street tires. The tires hooked surprisingly well. My second pass was a 13.16 with a 2.01 60ft. After that I started getting a little slower each pass. as expected. My best that day was a 1.99 60ft. The rest were 2.01's.

My next time at the track, I had a tune, sticky tires on heavier wheels. My 60fts were 1.97 and 1.98. after the 60ft everything else started falling off leaving me with 13.59 Et at best that day.

I ran a few more times with different street tires and I couldnt get any consistant info so I thru all the slips away. I did run a 13.14 with a 2.12 60 with either the sticky/heavy wheels and tires on the rear and stock up front.

Ok, soooo I raced last night, all the same stuff except 26x11.5 ET street on stock snowflake wheels. all my 60's were between 2.05 and 2.07. My best ET was 13.28 and the rest ranging from 13.3 to 13.5....what the hell?

Each time at the track, the temp is 5-10 degrees warmer. starting at 50 and highest being 70. But when 70, it usually drops down to 60 later in the day.

My tune on the street, shifts hard as hell. Im wondering if that could be holding me back at the track? Instead of propellin, perhaps its bogging?

 

If I did a 13.16 my first time out, I would assume it had 12's in it. maybe a 12.94? I removed smog and EGR and had to tune the codes out....reason for tune. My goal was 12.71 after the tune

O and after my 1st time at the track, I removed the seats

ALSO- I seem to do better when I do NOT foot break it

 

I assume your an auto, sounds like your not spinning, just need more power or a higher stall to launch harder

 

Thanks! Yes, Auto

So this sounds normal?

 

What mph are you running? Do you have gears or a stall? How much of a burnout are you doing with the M/Ts? You should be able to do better than 2.0 with DRs.

 

post time slip

 

Stock converter, 3.23 gears

I do proper burnouts. Im not spinning at all with the DR's or the sticky (nitto extreme r, 305/30/18 on a heavy c6 Z06 wheel) tires on the heavy wheels. Im wondering if that could slow me down instead of propel me...at least when its shifting into 2nd? Is it possible to bog down instead of move forward?

before the tune, I only chirped 2nd on the street tires. The 2nd set of street tires, spin too easily. Ill have to get a friend to take a pic of my slips and time chart.

 

Stock converter is the problem. It won't get much better until you get rid of that! Get a set of skinnies for the front. That should drop about 40# easy and maybe get you into the 12's. Nitrous/150 shot will get you into the mid 11's, just don't launch on the spray to keep it in one piece!

 

Ok cool, Thats what I was lookin for.

Im hoping to have skinnies on the front this coming friday for the test and tune. I may have to run my 325/50/15's. That may slow me back down since its 2" taller

 

I dont plan on doing anything else to the car any time soon. When The trans starts slippin, Ill rebuild it and go with a 3400 or 3600 stall. I may get an ls6 intake, 243 heads and headers. But Im in no hurry since its my daily and my truck is down

 

Would 150 shot be safe with my converter? 11.99 requires a cage but they dont enforce it til you hit mid 11....I do not want a cage lol

 

Here is my record of my first time out with the TA. My phone is broken, I cant get any more pics. I ran these wheels and tires the first time out. They only chirped 2nd (I expected them to spin a lot but I could nail the pedal and they did fine)...





My mph were as follows; 107, 107, 105, 105, 103, 104. Temp started at 50 and worked its way up to 60

 

I wouldn't worry about reaction time. id focus on launching it. your time dosent start till you roll off the beams. so don't feel pressured to go on green.

 

stock convertor and sticky tire - have you tried mashing it from idle to get what little flash you can get out of a stock stall ?

your 107 trap says its making enough power to go 12's but you gotta fix that 60 foot , you should be able to 1.8 on a sticky tire stock stall/323's. a 1.8 60 foot combined with a 107 trap would be in the 12's I think any way you slice it

 

Thats one of my questions! I have tried both.

When I mash it from idle, I think I do better. Both of my 13.1 passes were from mashing from idle. Everyone at the track tells me to foot break to 1500. Friday I was runnin pretty consistent with 13.4 foot breaking it. when I mashed from idle I went 13.28 and that was my 14th pass of the night. Temps were cooler but i cant imagine the car being very cool.

 

My wife's car went from the 13s to 12.50 with nothing more than a Yank 4000 SS. Car has headers and cai.

 

ok you just revealed one of your problems and likely its why some of your passes are dropping into the 103/104 traps. The best way to combat temps getting warmer and to get better et's in general is to go for quality over quantity-14 passes is a lot !!. And don't listen to people at track if your getting better results off idle.

Example my old bolt on FWD v6 4 door regal GS ran 13.5's@104 for me , current owner took it to the track the other night and ran in the low 14's other than one 13.9 @99 , he got there late and proceeded to get a ton of passes in hot lapping it... What I used to do was get there early , park the car facing into any wind with the hood up and let it cool , make 2 passes before break , park it with hood up again , make 2 or 3 more passes before they closed , 4-5 passes total . other things I would do to keep cool only run the car if it could move forward , no idling in staging lanes , hood up in lanes if not moving soon - heck I may start/stop a car a dozen times between entering the staging lanes and my actual pass. As soon as I turn onto the return road I pull the hood release and try to maintain approx. 10 mph through the pits and back into the lanes to keep constant airflow , be sure to latch hood before staging the car.

Theres lots of other little things you can do that all add up also , things like 1/4 tank of fuel or less , remove un needed items before going to track , any crap you keep in the car , if you spin at all remove front sway bar , at track air up front tires for less rolling resistance (I run 60psi at track) remove jack/spare , learn how to shallow stage if you don't know how , look to the end of track while staging and racing to keep steering corections to a minimum , make sure you stay wot past the traps to be sure you didn't back out early ,go to the track when density altitude will be good , etc...

with a pb of 13.1 on 2.0 60 foot if you pay attention to the little details you will get 12's

 

I got the first 6 passes within 47 minutes. all with 13.3-13.4 let it cool for a while and the last two for the night were the best out of the day(mashed it from idle). I always do 6 or less but there was no one there, I couldnt resist. my number of passes isnt why its slowing down week to week. I think its either from lack of power, or the tune (even tho it shifts hard, I htink its pulling the RPM down)

My car has nothing in it, clean with no seats. always get there an hour early. Always run a quarter tank.

Im goin back friday. Ill try mashing at idle all night. Im bracket racing the next day so I need to be consistent on Friday and not try a lot of different things.

Im not trying to MAKE it faster. Im trying to find out why its not faster. (why its gettin slower)

 

Here's my story

I buy the car with a catback. I install a cold air intake. (November) Go to the track, run a best of 13.16@107.19 with a 2.01 60' and with a little spinning.



April, I added sticky tires, but were heavier than stock, removed my EGR, smog and traction control. My 60ft is 1.97 with a 13.59@104.46



I cleaned and oiled my filters (I thought I over oiled) ran a whole tank of lower grade fuel, added 93 back to it right before racing and removed all my seats except drivers. All of my times were worse all across the board.

I remove the heavy wheels/tires, clean without oiling my filters, clean the MAF. Spin my *** off, all times were worse except my personal best which was a 13.14@108.3 with a 2.12 60'



I go back with MT ET Streets on snowflake wheels. All my 60's were 2.05-2.07 with times between 13.3-13.4 with a best of 13.28.

Im trying not to modify the car. Im trying to find whats holding it back. I will pull the tune this Friday and see what happens. I should spin less.

 

Murph, That's some GOOD info you have there in post #17.