My Dyno Run Today 2012 LFX - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

bmorecam · 03-23-2012, 09:02 AM

Fsussmith, can you post up your graph so we can see where LFX power peak out

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KMPrenger · 03-23-2012, 09:08 AM

Quote:

Originally Posted by bmorecam

Mustang and dd used to be known as a heart breakers dyno. They are known to read lower than it should however, loaded dynos such as mustang and dd are the only one's that can be adjusted to read correctly also. Your number def look low considering you have a intake. The intake alone should be good for about 15 on a stock car, but again, dyno is only a tool to measure comparison. Mustang are ase corrected by default.

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You might have missed it Jay, but he said the 258rwhp was before his mods and he intends to go back for another run soon.

258rwhp and 228 TQ sounds spot on for the automatic LFX to me. Sounds like you have a nicely adjusted dyno there!

fsusmithc2 · 03-23-2012, 09:23 AM

Quote:

Originally Posted by bmorecam

Fsussmith, can you post up your graph so we can see where LFX power peak out

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Here you go. My mistake also, the TQ is closer to 227 than 228. Peak HP is right around 6500 and the run was in 3rd gear. KMPrenger is right, this is baseline stock. Haven't gone back yet but aim to soon. The shop (SS Performance, here in Tallahassee) was having a grand opening and offering runs for $50 when they're normally $75 so I jumped on it before I did the mods about a week later.

bmorecam · 03-23-2012, 12:01 PM

Thanks fsusmith,

Look like it peaked out right before 6500 rpm. Just as I thought

.

and LFX do run alot leaner than the LLT as vince told me before. Looking at smith's graph the AFR is over 13. Maybe GM realized that they didn't need to run so rich with direct injected engines. One of the beauty of DI is that we can get away with less fuel since it spray directly in the combustion chamber. I never understood why the LLT was so rich from factory.

bmorecam · 03-23-2012, 12:06 PM

Quote:

Originally Posted by KMPrenger

You might have missed it Jay, but he said the 258rwhp was before his mods and he intends to go back for another run soon.

258rwhp and 228 TQ sounds spot on for the automatic LFX to me. Sounds like you have a nicely adjusted dyno there!

yup

I did miss it LOL.

The dyno def does look correctly adjusted. That is one of the beauty of loaded dynos. Adjustment on the fly

fsusmithc2 · 03-23-2012, 12:45 PM

Quote:

Originally Posted by bmorecam

The dyno def does look correctly adjusted. That is one of the beauty of loaded dynos. Adjustment on the fly

Looks like we've got a good shop here in Tally then!

vkerster · 03-23-2012, 05:48 PM

Have a 2012 camaro with the LFX V-6 and six speed manual and have only bumped the rev limited once at 7200rpms. What gives with your LFX hitting the limiter at 6500?

vkerster · 03-23-2012, 05:52 PM

ABSTRAK, I Have a 2012 camaro with the LFX V-6 and six speed manual and have only bumped the rev limited once at 7200rpms. What gives with your LFX hitting the limiter at 6500?

KMPrenger · 03-23-2012, 06:12 PM

Quote:

Originally Posted by vkerster

ABSTRAK, I Have a 2012 camaro with the LFX V-6 and six speed manual and have only bumped the rev limited once at 7200rpms. What gives with your LFX hitting the limiter at 6500?

First off, he didn't hit the rev limiter...he hit the MPH limiter.

2nd...unless they raised the rev limiter in the LFX versus the LLT (which I don't think they did) you didn't hit 7,200 rpm.

bmorecam · 03-23-2012, 07:50 PM

Quote:

Originally Posted by KMPrenger

First off, he didn't hit the rev limiter...he hit the MPH limiter.

2nd...unless they raised the rev limiter in the LFX versus the LLT (which I don't think they did) you didn't hit 7,200 rpm.

He has 18" wheels from factory which limit the speed to 118 I believe. No v6 camaro go pass 7k unless you been tuned to go pass the 7k rev limiter.

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butters · 03-23-2012, 08:10 PM

Noob question, where does gm get 323hp from?

scrming · 03-23-2012, 08:22 PM

Quote:

Originally Posted by butters

Noob question, where does gm get 323hp from?

Car specs from the manufacturers are measured at the engines crankshaft... These dyno runs measure the HP at the wheels... there is some HP loss transferring the power from the engine to to the wheels... which is why dynos have lower numbers...

butters · 03-23-2012, 10:07 PM

Quote:

Originally Posted by scrming

Car specs from the manufacturers are measured at the engines crankshaft... These dyno runs measure the HP at the wheels... there is some HP loss transferring the power from the engine to to the wheels... which is why dynos have lower numbers...

Is there any way to measure hp at the crank?

vkerster · 03-24-2012, 08:31 PM

Then I have a factory freak because I've had my LFX to 7000rpm's several times and did hit the limiter the only time it bumped 7200. Could the camaros with automatics be set up different than the manual transmission camaros? Mine is a manual...

03-23-2012, 12:01 PM	#32
bmorecam Account Suspended Drives: jealous vendors mad!! HAHA!! Join Date: Jan 2011 Location: CYBERGMONSTER@GMAIL.COM Posts: 3,658 View My Garage	Thanks fsusmith, Look like it peaked out right before 6500 rpm. Just as I thought. and LFX do run alot leaner than the LLT as vince told me before. Looking at smith's graph the AFR is over 13. Maybe GM realized that they didn't need to run so rich with direct injected engines. One of the beauty of DI is that we can get away with less fuel since it spray directly in the combustion chamber. I never understood why the LLT was so rich from factory.

03-23-2012, 08:10 PM	#39
butters Drives: 2010 2SS/RS L99 Join Date: Jul 2011 Location: Chicago, IL Posts: 1,139 View My Garage	Noob question, where does gm get 323hp from? __________________

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03-23-2012, 09:02 AM	#29
bmorecam Account Suspended Drives: jealous vendors mad!! HAHA!! Join Date: Jan 2011 Location: CYBERGMONSTER@GMAIL.COM Posts: 3,658 View My Garage	Fsussmith, can you post up your graph so we can see where LFX power peak out Sent from my POS phone using tapatalk.

03-23-2012, 05:48 PM	#35
vkerster Experimential Machinist Drives: 2012 Camaro 1ls Join Date: Mar 2012 Location: Highland, Mi Posts: 18	Have a 2012 camaro with the LFX V-6 and six speed manual and have only bumped the rev limited once at 7200rpms. What gives with your LFX hitting the limiter at 6500?

03-23-2012, 05:52 PM	#36
vkerster Experimential Machinist Drives: 2012 Camaro 1ls Join Date: Mar 2012 Location: Highland, Mi Posts: 18	ABSTRAK, I Have a 2012 camaro with the LFX V-6 and six speed manual and have only bumped the rev limited once at 7200rpms. What gives with your LFX hitting the limiter at 6500?

03-24-2012, 08:31 PM	#42
vkerster Experimential Machinist Drives: 2012 Camaro 1ls Join Date: Mar 2012 Location: Highland, Mi Posts: 18	Then I have a factory freak because I've had my LFX to 7000rpm's several times and did hit the limiter the only time it bumped 7200. Could the camaros with automatics be set up different than the manual transmission camaros? Mine is a manual...