Stuck in the 13s

[Pro Stock John]

Did you have your fan settings changed in your tune OP?

One thing that was shared with me, and it mirrored my experience with my TBSS, is that the engines heat up in the staging lanes (stock).

Stock I would cool my car down as low as I could stand waiting, so 175F let's say. If there was no wait I was happy, but if I had to wait behind 5-6 other cars my car would heat up.

That's a big reason many folks stock only went 13.4 in their L99 cars.

[Revo1]

Originally Posted by SRT10KLLR

If you are not having traction issues then do not lower the rear tire pressure at all. Yes, you can increase tire pressure to the fronts as well. You may have to warm up the tires better and foot brake it to 2K and let her rip. You need to progressively foot bake higher and/or hit the pedal harder until you get some spin then back off slightly.

You should not have to do the fuse pull since you are changing tunes. When you reflash the ECM the addaptives reset.

Come down to SoCal and we can go to Irwindale for some 1/8 mile practice runs.

Originally Posted by HaubSS

Bro we need to give this another go around. I'm gonna want to knock the dust of my car anyway. You definately have a 12 second car, I think we just need to practice the execution.

Sounds good to me fellas

[Revo1]

Originally Posted by Pro Stock John

Did you have your fan settings changed in your tune OP?

One thing that was shared with me, and it mirrored my experience with my TBSS, is that the engines heat up in the staging lanes (stock).

Stock I would cool my car down as low as I could stand waiting, so 175F let's say. If there was no wait I was happy, but if I had to wait behind 5-6 other cars my car would heat up.

That's a big reason many folks stock only went 13.4 in their L99 cars.

That's a very good question, will ask my tuner about that...

[Pro Stock John]

Someone on here (thanks Josh) pointed out that nifty feature where you can see your coolant temps in that small display above the steering wheel. Running with 200F coolant temps with stock fan settings will most likely mean that tht pcm will reduce timing advance, less horsepower.

The last time I ran stock I went 13.20 and 1.94 on street tires.

Try to make sure your shift points are not jacked up either. Your lackluster times = not making the power or you should, shift point issues or something.

[Racecarguy]

So do you have any idea where your fans come on at? On our test and tune nights here, you will be sitting there idling behind 5-6 cars. May be best to shut off engine while waiting

[camslambam]

Fans come on at 200 or 210. Has been a while since I tested it but I remember we sat there for about an hour trying to figure this out when my car was overheating after my cam install. Now that I think about it I'm almost certain at 210 they would come on.

[Pro Stock John]

If you read threads in the tuning section I think the fans come on like 219F.

Mine come on sooner but I didn't tune them. I am seeing mid 190's idling in the staging lanes as opposed to 201-205F.

[daveagogo1]

Originally Posted by DandD

It sounds to me as though you are just sitting there idling at the line and then when you get the light you open it up and drive it down the track. Try holding your left foot on the brake hard and torque it up to about 2000 rpm with the accelerator then when you get the light let off the brake and roll into the throttle at the same time. You'll find the sweet spot for your tires and set up rpm wise but I think you'll find your 60' times and thus your overall ET coming down. Thats how a "professional" driver gets 12.9 out of the car in stock form.

load that converter up and just roll into the throttle. With those mods you should be easily in the 12's. You would pick up a little bit without comp mode on as well. M with everything off.

[VADER SS L99]

Originally Posted by Motion427

The stock ECM IAT table.If the IAT reaches these temps,
At 86F your loosing 2 degrees of timing
At 95F,your loosing 3 degrees of timing
At 104F to 113F,your loosing 6 degrees of timing
At 122F to 131F,your loosing 7 degrees of timing
At 140F,your loosing 8
At 149F,your loosing 9
And at 158+,your loosing 10

This is exactly what happened to me with this car the first time I went to the track this summer and I bet its what is happening to the OP. The car that I took to the track before this one was a full bolt on 4th gen that ran low to mid 12's depending on if it was summer or fall. When I first took the 5th gen to the track I just for some reason expected it to act the same and not get bothered by heat soak, high IAT's, timing retard, and high coolant temps. I should have had a reality check. My 4th gen had a electric water pump and the IAT sensor was relocated out of the engine bay. On that car the coolant temps never got above 185* no matter how hot it was and the IAT always read ambient at all times. I would litterly hot lap that car and it was consistant. Shame on me for doing the same with the 5th gen. It was really really busy the night I went and everyone was sitting in the stagging lanes for 15-20min at a time. Dumbass me was leaving the hood down this entire time idleing and running ac full on. When my trap speeds showed way off from what I should have been doing and I figured out that it was because of coolant temps, KR, high IAT's ect.. pulling timing it was too late because they shut the track down from a spill. I only got like 4 runs in. I suspect that the IAT sensor is getting heat soaked between runs and by the time it reads true IAT temps the run is over. In other words its pulling 10*+ timing all the way down the track. My car also felt like a dog at the track. After cruising on the highway on the way home for 15min I decided to do a few WOT runs and it felt like its normal beastly self. It even scared me. Its because the car was no longer heat soaked and reading true IAT's. My car should have been running 11's but I couldn't get out of the 12's for said issues. This car really does have a IAT heat soak issue if it sits for any length of time.

My advise would be to get your tuner to turn the fans on full at the lowest tempature possible and keep your hood up the entire time in the lanes until the last possible moment. Its what I will be doing next time. I am also seriously considering getting the ADM race CAI with scoop because the IAT/MAF is relocated out of the engine bay.

[Pro Stock John]

Good post vader. We could hot lap 4th gens, and basically did 2-3 runs in a row until I'd see the trans temps get high.

Different story with my 2006 TBSS. I noticed right away that they ran slow when hot. I ran 14.7 off the highway and a string of low 14's until I let it cool for 50 minutes. I then started working my way down to my best stock run of 13.84@99.

Stock my '10 Camaro SS will run 1-2 tenths slower once it got hot (when totally stock).

Tuning the fans is a must for a regular drag racer.

[Revo1]

Really wishing now that I'd had a chance to run the '02 before selling :(


I always pop the hood and kill the motor for as long as I possibly can between passes. Just learning about timing pull and such, but I don know the car runs better when it's cool. I'll talk to my tuner about the fans- now it is my daily driver. There is no reason that the fans coming on earlier would be a bad thing in that respect, correct?

[Pro Stock John]

My fans have all custom settings and mine is my daily driver, no worries.

[quickcamaro]

Originally Posted by JANNETTYRACING

Last time I checked I am still human!

I can make mistakes.

But Not given the Opportunity to correct any mistakes is just Unfair and does not make my tunes JUNK!

I am surprised at this remark since I have never left anyone hanging, I always answer emails, phone calls, and PMs.

Ted.

all of my jannetty tunes are top notch. if you would have worked with ted he would have made you extremely happy.
p.s. it never occured to me that ted is human.

[Revo1]

Originally Posted by Pro Stock John

My fans have all custom settings and mine is my daily driver, no worries.

Good to know... Will check with him on that, got a few tweaks to have made before track day next month. I'll definitely be able to ask better questions thanks to you fellas, appreciate l the input