irpq11, L99 Dyno results.

[CamaroSS24]

You know, I'm not sure. I used Kimmel & Silverman at the time, which is a local firm. The 800MYLEMON is something I hear advertised on the radio nowadays (in Philly), but I didn't call them (although it sounds like the same group). Give them a buzz, or look for a local Lemon Law guy in Alabama. The first thing is, you don't pay them. If they want money, find a lawyer that will do it on a win only basis. Worse comes to worse, you can settle for a $ amount (that they get half of) & put in that supercharger, or you get a new car from GM.

[1camaro70]

observed L99 tune with pcmforless, Brian Herter, today: 304 HP / 300 TK, with tune 327 HP / 342 TK was tuned to keep smooth shifts in D and firm in M.

[Number_9]

Originally Posted by 1camaro70

observed L99 tune with pcmforless, Brian Herter, today: 304 HP / 300 TK, with tune 327 HP / 342 TK was tuned to keep smooth shifts in D and firm in M.

This is becoming a pattern... around 300-306hp and 300 or less TK. Give her a tune.. and boom, 325-335hp and 340+ TK.

[camaro1]

Originally Posted by Ninjak

Hmmm Thats about 475 I think @ the crank. Nice. very nice. Must be some hella of driving skilz as well.

no, the s-10 was probly well over 500hp at the crank, when you start talking about small diameter high stall converters you can easily loose more than 25% hp throught the converter/trans, but the vehicle will still be faster than a stock converter that may only see 15% loss(the engine was built to the same specs as the car craft L92 6.0L build that made 550 hp on the engine dyno)

[solo40oz]

hey irpq11 -

I haven't read thru this entire long thread...and maybe you've already figured this out......but I noticed something on your dynolicious graph that you posted on another thread...notice in the 1st run that the 0-60 time is 7sec...but also notice that acceleration doesn't start until 1 second...which means this was really a 6sec run

On the 2nd run though...look at the flat acceleration at time 0...then the spike at like 6sec....that doesn't seem right

[rpepka]

Where you at with the dealer Randy?

[SK360]

Originally Posted by 1camaro70

observed L99 tune with pcmforless, Brian Herter, today: 304 HP / 300 TK, with tune 327 HP / 342 TK was tuned to keep smooth shifts in D and firm in M.

I was there as well and saw the 42rwtq gain with my own eyes, like I said yesterday a very nice gain for a basically stock car with a K&N drop in and tune.

Car was very nice

[pcmforless]

I'm attaching the dyno sheets from the L99 tune last night. I don't have the air/fuel up on them as the dynojet one was not working, so I had to log with my portable unit. The stock air/fuel was right on 11 to 1 and the finish tune was 13 to 1

The car really is detuned from the factory a large amount. The HP gain is one thing, but the huge Torque gain is the reason why I feel people are feeling these cars are slow.

[matt55]

Originally Posted by pcmforless

I'm attaching the dyno sheets from the L99 tune last night. I don't have the air/fuel up on them as the dynojet one was not working, so I had to log with my portable unit. The stock air/fuel was right on 11 to 1 and the finish tune was 13 to 1

The car really is detuned from the factory a large amount. The HP gain is one thing, but the huge Torque gain is the reason why I feel people are feeling these cars are slow.

A lil O.T.
Question to you or any other tuner in this thread ,
L99 have VVT (verable valve timing?) , can you change the advance/retard on the cam with any of the reflash programs , and how much does it help out HP/TQ ??

[PQ]

Originally Posted by solo40oz

hey irpq11 -

I haven't read thru this entire long thread...and maybe you've already figured this out......but I noticed something on your dynolicious graph that you posted on another thread...notice in the 1st run that the 0-60 time is 7sec...but also notice that acceleration doesn't start until 1 second...which means this was really a 6sec run

On the 2nd run though...look at the flat acceleration at time 0...then the spike at like 6sec....that doesn't seem right

Ya, I noticed both of those. It leads me to believe that the Dynolicious app isn't real acurate or it just gets confused. Here is an example. My latest run. I did the whole quarter mile. The info looks good except for the final speed. I think the top speed is acurate but reads below the 'final speed'

Obviously I wasn't doing 121 mph but I WAS doing 105 mph by looking at the gauge when the beeper went off telling me that it was 1/4 mile.

Originally Posted by rpepka

Where you at with the dealer Randy?

They still aren't ready for me.

[PQ]

Originally Posted by pcmforless

I'm attaching the dyno sheets from the L99 tune last night. I don't have the air/fuel up on them as the dynojet one was not working, so I had to log with my portable unit. The stock air/fuel was right on 11 to 1 and the finish tune was 13 to 1

The car really is detuned from the factory a large amount. The HP gain is one thing, but the huge Torque gain is the reason why I feel people are feeling these cars are slow.

I wonder if the cars that were given for testing were 'tuned up' so the numbers would look good. Most of the tests were doen with the M6 anyway.

[matt55]

Originally Posted by irpq11

I wonder if the cars that were given for testing were 'tuned up' so the numbers would look good. Most of the tests were doen with the M6 anyway.

+1
It would be nice to look at the "tune" on the low 13's l99's and compare to your's and Scott's !

[1camaro70]

look at the graphs from above, livernois and the three from irpq11 for stock torque, first two are 300 ft/lb at 3000 rpm 1rpq11 not till 4000 rpm (at 3500@ 40?), am I missing something? or is this just how the dyno recorded?

[CamaroSpike23]

Originally Posted by rodimus prime

Since there are a lot of l99s running rich, maybe there are some faulty injectors. Anyone pressure test their injectors yet? I cant imagine that some cars would magically get a richer tune from the factory than others. However I can imagine GM getting huge batches of injectors that have a few leaking in the batch.

most every car comes rich from the factory, but adding in the easy break-in's that people are doing is keeping the pcm from leaning itself out. not to mention, every LS series motor doesnt really come into its own until about 5-10,000 miles.

Originally Posted by irpq11

Well, one thing that NOBODY can tell me otherwise is that some of these L99s are DEFINATELY running rich.

Are they supposed to? But they are.

its safer to run rich than lean. auto manufacturers tune the car to run richer than needed on a stock tune to err on the safe side.

Originally Posted by irpq11

Ya, I noticed both of those. It leads me to believe that the Dynolicious app isn't real acurate or it just gets confused. Here is an example. My latest run. I did the whole quarter mile. The info looks good except for the final speed. I think the top speed is acurate but reads below the 'final speed'

Obviously I wasn't doing 121 mph but I WAS doing 105 mph by looking at the gauge when the beeper went off telling me that it was 1/4 mile.

Attachment 40392Attachment 40393Attachment 40394



They still aren't ready for me.

honestly, I would never have used that thing for a real 1/4mile test/recording device. this weekend you need to drive to the track, let the car cool down for a little while you grab lunch, and then go take it down the quarter mile (maybe even try it with the "other" wheels you have too. )