PDA

View Full Version : Finally got my car tuned.


99-LS1-SS
04-24-2009, 05:13 PM
I must say, I'm a little disappointed in the numbers but, like everyone says, the dyno is just for tuning. I haven't had a chance to really run the hell out of it due to traffic. I hope to get a few runs in in the next day or so. Anyway, here is the graph.

http://www.usamls.net/brandon/images/gxp_dyno.jpg
GRRRR8
04-24-2009, 05:16 PM
It has more in it. Did they check it on the street to check A/F over 50 to WOT to make sure the tune is good in real world conditions?
99-LS1-SS
04-24-2009, 05:21 PM
It has more in it. Did they check it on the street to check A/F over 50 to WOT to make sure the tune is good in real world conditions?

You have a PM.
norm8332
04-24-2009, 05:36 PM
I don't think it's bad at all for your mods. I thought that's around what was expected?
99-LS1-SS
04-24-2009, 05:41 PM
Honestly, I was hoping for around 415 to 425. But I might have been too optimistic. Either way, it's faster and it runs better than it did.
DewieJr
04-24-2009, 08:18 PM
1 7/8 theres your loss...unless your running a big head/cam or SC. I lost 15rwhp going from 1 3/4 to 1 7/8 on the same dyno and same condition on my LS2 GTO. You'll see the big gain from the larger headers with the addition of above said mods.
G8GT594
04-24-2009, 08:34 PM
The 1 3/4 vs 1 7/8 debate could go on forever...
The Commodore
04-24-2009, 11:02 PM
The 1 3/4 vs 1 7/8 debate could go on forever...

Well you did make a lot of power with 1 3/4s and you are running a 12.3 with stock drive line and stock tires.

Maybe you should keep the 1 3/4s with the Stage 1 cam. Regardless you are running amazing times.

But honestly I am trying to learn more about where the fine line is between staying 1 3/4s or going 1 7/8s.
-Ray-
04-25-2009, 04:09 AM
Like Paul said, this debate can go on forever. The 1 3/4 makes their power down low, and the 1 7/8 makes their's up top.
GRRRR8
04-25-2009, 04:30 AM
The 1 7/8 didnt cost him any power on a 376 cu in motor if they dont cost any power on a 364.
-Ray-
04-25-2009, 04:35 AM
He really must be disappointed if he posted it in the lounge. LOL
MANOFSTEEL69
04-25-2009, 04:58 AM
That's where it should have been I think.
99-LS1-SS
04-25-2009, 05:56 AM
He really must be disappointed if he posted it in the lounge. LOL

Either that or I was drinking....:)

It's been moved.
syP
04-26-2009, 10:01 PM
i dunno... i added 1 7/8 to my car and dropped from a 13.48 to a 13.12... and trapped from a 102 to a 106mph.. i dont think 1 3/4 would have netted me any more
DewieJr
04-26-2009, 10:13 PM
i dunno... i added 1 7/8 to my car and dropped from a 13.48 to a 13.12... and trapped from a 102 to a 106mph.. i dont think 1 3/4 would have netted me any more

Thats great, however with Dayton, Ohio being GTO capital of the East, at I as well as 2 other 1 7/8's have proved over and over on different dyno's that we put out less RWHP than the guys who are running 1 3/4's...that is until we showed a cam car making more with 1 7/8's.

Debate as you will, but we have our proof.
99-LS1-SS
04-27-2009, 03:26 AM
Let's not turn this thread into a 1 7/8 vs 1 3/4 debate. I didn't make any excuses.

Now onto the butt-o-meter test. I finally got to run my car somewhat hard this morning and it feels faster. Second and third gear feels like they pulls stronger. I didn't have enough room to run into fourth. Regardless of what is posted on the sheet I'm happy with my car. Now I'm saving for some sort of power adder that will stop the harassment of some unnamed red G8 driver....cough...Charlie....cough....
GRRRR8
04-27-2009, 04:26 AM
Thats great, however with Dayton, Ohio being GTO capital of the East, at I as well as 2 other 1 7/8's have proved over and over on different dyno's that we put out less RWHP than the guys who are running 1 3/4's...that is until we showed a cam car making more with 1 7/8's.

Debate as you will, but we have our proof.

Thats not with L92 heads or L76/LS3 intake though.



Let's not turn this thread into a 1 7/8 vs 1 3/4 debate. I didn't make any excuses.

Now onto the butt-o-meter test. I finally got to run my car somewhat hard this morning and it feels faster. Second and third gear feels like they pulls stronger. I didn't have enough room to run into fourth. Regardless of what is posted on the sheet I'm happy with my car. Now I'm saving for some sort of power adder that will stop the harassment of some unnamed red G8 driver....cough...Charlie....cough....

Save save save! The harassment will continue even then. :)