My Dyno Run Today 2012 LFX - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

bmorecam · 03-22-2012, 06:56 PM

Quote:

Originally Posted by Abstrak

You got to explain the correction and smoothing to me as I dont understand that at all lol. And I dont see how those numbers would be peak if it bottomed out at 6.5k rpms wouldnt it be higher if the engine was still able to put out power minus the rev limiter?

smoothing basically correct spikes. There's two corrections or "industry standard" used mainly in US. STD and SAE. They are basically preset temperature and condition set by the society of automotive engineers to be able to compare hp/tq numbers correctly. For an example, if you dyno the same LFX in the high elevation, you are going to come out with a completely different number than a LFX dynoed over at the seaside. To make comparisons work accurately, society of automotive engineers created standard and SAE correction factors each defined by preset conditions. I have more info on the first page of dyno sticky up top if you want to know more.

LFX is rated to peak out at 6800 rpm, but I can almost guarantee you that you are not really going to see too much of a difference or any by missing out 300rpm. They say the LLT peak out at 6400 rpm, but usually we crap out around 6k rpm. If it was like 1k rpm short or more than I would say it's possible.

I have to get up with tim and see when we can get in. I will let you know as soon as I know something

fsusmithc2 · 03-23-2012, 08:27 AM

258rwhp/228tq on a Mustang MD-500 was the baseline for my LFX. Not sure if correction was added or not. I need to get back to the dyno now that I've modded a little and see what I get. If the claims from CAI and Ark are to be believed, I should be up in the 280 range. Then we'll have to think long and hard about a tune...

bmorecam · 03-23-2012, 08:58 AM

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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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.

Sent from my POS phone using tapatalk.

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

Sent from my POS phone using tapatalk.

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...

bmorecam · 03-25-2012, 09:17 AM

Quote:

Originally Posted by butters

Is there any way to measure hp at the crank?

engine dyno

Quote:

Originally Posted by vkerster

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...

I believe you can hit 7k rev limit on 1st gear and 2nd gear even if the car was speed limited from the factory because of the 18" tires. I believe it's gears 3-6th where you can't get pass 100 something mph which leave you before 7k rpm. I'm not a 100% since I never had to deal with speed limiter since mine is the RS package. Maybe someone who been through this speed limit thing can confirm, but I'm sure is no different between a LLT and LFX.

vkerster · 03-26-2012, 11:22 AM

bmorecam, I believe you misspoke on your last post. 2012 1LS Camaros come stock with 28.5 in.dia. tires.

vkerster · 03-26-2012, 11:26 AM

bmorecam, courious, what does the RS package have anything to do with not hitting the speed limiter? (did you mean rev limiter?)

cjt037 · 03-26-2012, 11:28 AM

Quote:

Originally Posted by butters

Is there any way to measure hp at the crank?

Theirs a few calculators but why brag about power you don't have.

bmorecam · 03-26-2012, 11:35 AM

Every v6 camaro that come from the factory with 18" wheels/tires are limited to 118 MPH. This is because those 18" tires are not rated to go that fast. So due to liability issue they come with a speed limiter. Now if you have 19" or 20" wheels and tires from factory, than you have no speed limiter. RS models come with 20" wheels and tires.

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xx_ED_xx · 05-15-2012, 06:35 PM

Anyone use a dynapack dyno?

HopeRidesAlone · 05-15-2012, 07:07 PM

those numbers arnt too bad here mine from tnt performance dyno day now this was with an LLT with mods in sig. so id be pretty happy with a 250+ base

montyhp · 05-15-2012, 07:44 PM

Quote:

Originally Posted by INTIMIDAT3R

I like my LFX and the mileage I get.

If I want performance, I'll drive my 2SS/RS.

Sir,

I believe you have more than your fair share. Maybe the government should take one and give it to someone who drives a ford focus.

03-23-2012, 12:01 PM	#32
bmorecam Account Suspended Drives: jealous vendors mad!! HAHA!! Join Date: Jan 2011 Location: CYBERGMONSTER@GMAIL.COM Posts: 3,705 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 It's not the batmobile! Drives: 2012 Camaro LFX Join Date: Jul 2011 Location: Chicago, IL Posts: 764 View My Garage	Noob question, where does gm get 323hp from? __________________ Installed: MRT v1.0 \| CAI Intake \| VMax PTB \| 20" euroTEK UO6 \| Toyo Proxes ST II 255/295 \| Heritage Grill \| RKSport Spoiler \| RS Headlights + Demon Eye Halos \| Showstopper Sidemarkers \| 35% Window Tint \| Concept BLACK Fender Scripts Build Journal: 2012 BLACK Build Thread

05-15-2012, 06:35 PM	#48
xx_ED_xx Drives: 04 Silverado Join Date: Jun 2010 Location: Floriduh! Posts: 1,124	Anyone use a dynapack dyno? __________________

05-15-2012, 07:07 PM	#49
HopeRidesAlone Drives: 2010 Camaro Black 2Lt Join Date: Mar 2010 Location: Maryland Posts: 838 View My Garage	those numbers arnt too bad here mine from tnt performance dyno day now this was with an LLT with mods in sig. so id be pretty happy with a 250+ base __________________ Injen CAI, ARK DTS Catback Polished Tips, OBX LT Headers, Lowered on Eibach, 3/8 blackiceolator.

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03-23-2012, 08:58 AM	#28
bmorecam Account Suspended Drives: jealous vendors mad!! HAHA!! Join Date: Jan 2011 Location: CYBERGMONSTER@GMAIL.COM Posts: 3,705 View My Garage	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. Sent from my POS phone using tapatalk.

03-23-2012, 09:02 AM	#29
bmorecam Account Suspended Drives: jealous vendors mad!! HAHA!! Join Date: Jan 2011 Location: CYBERGMONSTER@GMAIL.COM Posts: 3,705 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...

03-26-2012, 11:22 AM	#44
vkerster Experimential Machinist Drives: 2012 Camaro 1ls Join Date: Mar 2012 Location: Highland, Mi Posts: 18	bmorecam, I believe you misspoke on your last post. 2012 1LS Camaros come stock with 28.5 in.dia. tires.

03-26-2012, 11:26 AM	#45
vkerster Experimential Machinist Drives: 2012 Camaro 1ls Join Date: Mar 2012 Location: Highland, Mi Posts: 18	bmorecam, courious, what does the RS package have anything to do with not hitting the speed limiter? (did you mean rev limiter?)

03-26-2012, 11:35 AM	#47
bmorecam Account Suspended Drives: jealous vendors mad!! HAHA!! Join Date: Jan 2011 Location: CYBERGMONSTER@GMAIL.COM Posts: 3,705 View My Garage	Every v6 camaro that come from the factory with 18" wheels/tires are limited to 118 MPH. This is because those 18" tires are not rated to go that fast. So due to liability issue they come with a speed limiter. Now if you have 19" or 20" wheels and tires from factory, than you have no speed limiter. RS models come with 20" wheels and tires. Sent from my POS phone using tapatalk.