If any of you have been following of the OTHER LS1tech owner's car, ie. mine, you know it's been a bad year for me.

I went 11.15@120.30mph as a best at around 3600 raceweight. Car was heavy, shift points were low, this was thru a Flowmaster muffler, etc., hardly the results of a dialed in combo.

But since then, nothing but heartache and disappointment was the result everytime we took Dragula to the track.

Car was dynoed and did 450rwhp unlocked... with huge torque like over 500rw.

But at the track the car had nothing but problems. Car would backfire at the top of 3rd and then just about shut off.

Problem got worse over time. Car was now doing this whenever I would go wide open throttle.

I tried rewiring a bunch of stuff. I changed several sensors.

Finally, after almost three months of this, I gave up. I drove the car over to Speed Inc. (www.ls1speed.com) and asked Jim aka Intmd8 to look at it.

Well - He just called. Looks like it's fixed!!!!

Wahhhhooooooooooooooooooooooooo!

Programming was not right.

Car now runs much better at 13:1 AF than 15:1 AF.

Injector scaling was way off and the car had multiple tuning issues.

Jim just did like 5 full passes on a side street and he cannot get the car to hook on the 28" MH's... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I just wanted to thank Tom Izzo, Jim Moran, and Larry Hamilton of Speed Inc. for letting me bring the car there and for taking the time to troubleshoot the mysterious problem.

It would be nice to take the car to the track tonite and see what it would run before we installed the new ARE heads and cam but there's no time.

Thanks again guys, you really made my week. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

John

 

hey john what mods do you have ????

 

its about time john!

 

Better hurry up...I'm slowly catching those ETs with my 'lil 346 <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

11.44 and falling <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Who knows what might happen now that I got my bigger cam back in (that dynos better) and after I get my new 30# injectors in (tonight) <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />

<small>[ September 03, 2002, 01:33 PM: Message edited by: Fireball ]</small>

 

Here are my mods as of yesterday:

422ci LS1/LQ4 built by Agostino Racing Engines
Ross forged pistons
Lunati billet 6.200 Pro Mod rods
Lunati billet stroker crankshaft offset ground to 4.075
10.8:1 compression
6.0 LQ4 block bored to 4.060
Stage II LS1 heads 2.08/1.60 valves
Trickflow chromoly pushrods
Cloyes roller timing chain
ASP underdrive crank pulley
Ported stock throttle body
Lunati 590/590//242/242//114 camshaft
Comp 987-16 valvesprings
Bosch 39 lb injectors
Blueprinted and modified oil pump
LS6 intake with LS6 PCV system
MAF Translator
Whisper airlid
K&N air filter
Throttle body coolant bypass free mod
Free ram air free mod
SLP LS6 85mm MAF

IGNITION

MSD Wires

EXHAUST

TTS longtube headers
Homemade 3" dual exhaust, H pipe, 3" Borla XR1 Sportsman mufflers

DRIVETRAIN

FLP Level IV.2 4L60E
Yank Thruster Pro Extreme 3600 converter
B&M 19,000 GVW transmission cooler
Stock steel driveshaft
Stock brakes
Metco driveshaft loop
Moser nine inch rearend, 31 spline axles, with Strange nodular case,
Tractech soft locker, and 4.10 gears

SUSPENSION

Weld Pro Stars 15x3.5, 165R15 radial tires
Weld Pro Stars 15x10 (7.5 offset), 11.5x26x15 ET Streets
Alston Racing lower control arms
Random Technology torque arm
HAL 12-way adjustable shocks and springs in front
Airlift airbag in right rear spring
Alston Racing 8 point chromoly rollcage

MISCELLANEOUS

Autometer Phantom series 5" tach and shiftlite
Autometer Phantom series a/f ratio gauge in pillar pod
Autometer Phantom series fuel pressure gauge in pillar pod
Converter lockup switch by PureEvil Racing
ASCD WS6 style ramair hood

TIMES

11.15@120.30mph, 1.53 60', 422ci, with 26x11.5x15 ET Streets at US41, 12/9/01, 3650 raceweight

 

Did you not have a wideband O2 hooked up to the car when you dynoed? If the car was that lean, I would think you would have known it.

Did you not ever pull a spark plug out after a run to see what it looked like?

Mine is really lean now @ part throttle. I need to to some tweaking myself to get it right...

 

That's Good!
Now you can swap parts and have it re-programmed. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
10.5x's,baby!

 

Hi George, the thing is, the car WAS redynoed earlier this year and got like 15 pulls on it. All that dynotuning was no good.

My problem was a combination of the improperly scaled injectors and other aspects of the tune. No wonder the car never mph'd well.

New mods:
ARE stage III LS6 heads, ~12:1 compression
ARE/ Comp XE-R camshaft
28x11.5x15 Hoosier slicks
PA Racing K member
BMR upper and lower control arms

Old mods coming off right now:
ARE stage III LS1 heads, ~10.8:1 compression
ARE/ Lunati 242/242//114 camshaft
26x11.5x15 ET Streets

 

So you did the new injectors after the dyno tuning? I see...

That injector scaling will really throw you off if it's not right... Thank goodness ChrisB helped me out with the SVO 42#'ers in my car...

 

Hey PSJ, How much were the rods and pistons? did you buy them as a combo set? thnx <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

I'm going over to Hawaii racing in a few min to pick up some 30# injectors for my ride. Should be enough for 525rwhp. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

 

Hey John, a couple of quick questions:

1) Who did the original tuning? Does his name rhyme with "Ted Night"? <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

2) I just replaced my stock (1999 LS1) injectors with Ford 30# injectors. I have been using my MAF-T as the only adjustment, setting it to 30% lean. I'm not too happy with it. I feel like I am losing a little power and I often get a lot of pinging at low throttles in high gears (ESPECIALLY when at higher loads). Would I benefit from some new tuning or will the MAF-T be as good as it gets for setting the injector scaling?

Thanks bud. Glad to know you got your car running right again! Awesome! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

_KRIS

 

Kris,
You need to tune with LS1edit and use the spreadsheet Chris B has developed to get you started. Then wideband the car on the dyno and tune in your WOT AF ratio/timing etc.
The MAFT isnt going to cut it at all.
Cheers,
Chris

 

GeorgeC, no, the injector scaling was not done correctly for my whitetop Bosch injectors, and I did the injectors over a year ago.

Tan, got it all together, but figure $500-800 for rods, and $500-800 for pistons, try ARE or LS1 Motorsports.

Kris, no it rhymes with Cryin' Poor-Ball. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Terryble, que paso, I think 36lb'ers are better for 525rwhp but then again I ain't never hit that number.

Maybe Jim will log on tonite and go into more detail.

 

That is great news John! Hope you get the swaps done soon, I know you are strapped for time bud. Keep us posted!

 

Kris, if you have L-Edit you should fix the injector scaling.

My programming was off and the car was always a dog for the parts I had in the car.

 

Now all I want to hear from you is how well your ride runs. (hope to say the same in 30-45 days too...bought the 94 Camaro roller)

Pat

 

Gonna be a monster when you run the juice. Why not just skip the 10 second time slip and go straight into 9's. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

John who did the tuning the first time?
I like to know?

Sounds good though..
Should click off a 10 very soon....

JS

 

It was ARE/ Superchips...

Then did Dyin' Bore-fall...

Now it's Speed Inc.!!!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Old heads and cam are already off the car. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />