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Camaro V6 LFX Engine, Exhaust, and Bolt-Ons For all LFX related parts

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Old 06-25-2013, 10:06 AM   #101
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Quote:
Originally Posted by GretchenGotGrowl View Post
Your torque curve looks real nice. I think you would have peak HP greater than 400 if they had pulled it al the way out to 7000 RPM. Did they explain why the terminated the pull early? Was that power drop off starting before they let off the throttle or just a result of them ending the run?
Not exactly sure. I know the tune isn't quite finished and we're not running a whole lot of boost at the moment (~6psi). We're gonna up the boost later.
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Old 06-25-2013, 12:04 PM   #102
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Originally Posted by rsv07 View Post
Here's my dyno sheet with the new RX Roots system.

Dynocom AWD
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Any Pictures and Any Prices?
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Old 07-03-2013, 03:40 PM   #103
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New numbers. IPS twin garrett turbos, ported throttle body, corsa exhaust. 461 hp 443 TQ. I sadly don't have any other information other than the graph since I wasn't there. but I'll try to find if they have it.
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Old 07-08-2013, 08:50 AM   #104
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Sorry for the ignorant question, but why are all the manuals doing pulls in 3rd gear, which has a transmission ratio of 1.63:1?

I thought you wanted to dyno as close to 1:1 as possible, which for the manuals is in 5th gear?

Us auto folk don't have a 1:1 gear; 4th and 5th are about equally on either side of it.

I can understand if you have a car that's speed limited at 113mph that you probably hit the limiter in the higher gears, but is that still the case for those limited to 155?
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Old 07-08-2013, 08:56 AM   #105
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Quote:
Originally Posted by 911medic View Post
Sorry for the ignorant question, but why are all the manuals doing pulls in 3rd gear, which has a transmission ratio of 1.63:1?

I thought you wanted to dyno as close to 1:1 as possible, which for the manuals is in 5th gear?

Us auto folk don't have a 1:1 gear; 4th and 5th are about equally on either side of it.

I can understand if you have a car that's speed limited at 113mph that you probably hit the limiter in the higher gears, but is that still the case for those limited to 155?
Most dyno operators won't want to do a 5th gear pull on a NA V6 because it takes so long. Additionally, it will hit the 155 limit well before it reaches redline in 5th.
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Old 07-08-2013, 10:29 AM   #106
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Cars with 18" wheels/tires are limited to 118, not 113, just a reminder.

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Old 07-08-2013, 10:50 AM   #107
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Originally Posted by JohnnyBfromPeoria View Post
Cars with 18" wheels/tires are limited to 118, not 113, just a reminder.

John B.
Not according to Chevy.

I admit that those w/18" wheels may have personal experience otherwise, but "officially," it's 113 MPH.
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Old 07-08-2013, 10:52 AM   #108
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Originally Posted by GretchenGotGrowl View Post
Most dyno operators won't want to do a 5th gear pull on a NA V6 because it takes so long. Additionally, it will hit the 155 limit well before it reaches redline in 5th.
Thanks for the explanation. How does this affect the results? Does is there some correction applied based on the specific gear ratio that is used?
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Old 07-08-2013, 11:11 AM   #109
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Quote:
Originally Posted by 911medic View Post
Thanks for the explanation. How does this affect the results? Does is there some correction applied based on the specific gear ratio that is used?
It is my understanding that some dynos can account for the final ratio, but I don't think many operators do that. I'm not sure how much a difference it makes, really. Maybe someone like Matt or Rhino can chime in on that one.
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Old 07-08-2013, 12:26 PM   #110
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In my case, the dyno operator kept hitting the speed limiter before he could get a full run so he did the rest of the runs in 3rd gear. I'm not sure what it does for the results.

Edit: Also I haven't forgotten about the guys who have posted their results since 6/25 - will update the charts soon.
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Old 07-08-2013, 01:24 PM   #111
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Thanks for the replies, guys.

I wonder how many cars can actually dyno their 1:1 gear ratio. Most would have it in 4th or 5th gear, so anything with a speed limiter of less than 160 MPH probably couldn't dyno that, right? That would eliminate a large percentage of cars, I'd think.
Quote:
Originally Posted by GretchenGotGrowl View Post
Maybe someone like Matt or Rhino can chime in on that one.
That would be good.
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Old 07-08-2013, 06:42 PM   #112
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Updated!
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Old 08-07-2013, 10:44 PM   #113
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Can you add me please?
Type and make of dyno: Dynojet
ODO at the time of the dyno: ?
Temperature: 84.84
Manual/auto: Auto
Gear used(3rd or 4th): 4th
Modification: CAI, Vmax Throttle Body, Solo High Flow Cats
Correction used(STD or SAE): SAE
Result: 278 hp / 259 tq
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Old 08-08-2013, 12:16 AM   #114
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Quote:
Originally Posted by 911medic View Post
Not according to Chevy.

I admit that those w/18" wheels may have personal experience otherwise, but "officially," it's 113 MPH.
When I hit the speed limiter in 3rd, the DIC read "speed limited to 118"...
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Old 08-08-2013, 06:35 AM   #115
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Updated!

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Old 08-08-2013, 07:25 AM   #116
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Quote:
Originally Posted by RacnJsn95 View Post
When I hit the speed limiter in 3rd, the DIC read "speed limited to 118"...
I wonder why Chevy lists it 5mph less? They have it right for the higher limiters.
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Old 08-08-2013, 07:27 AM   #117
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Quote:
Originally Posted by Tavo32 View Post
Can you add me please?
Type and make of dyno: Dynojet
ODO at the time of the dyno: ?
Temperature: 84.84
Manual/auto: Auto
Gear used(3rd or 4th): 4th
Modification: CAI, Vmax Throttle Body, Solo High Flow Cats
Correction used(STD or SAE): SAE
Result: 278 hp / 259 tq
Is see those runs were about 45 minutes apart. Did you add a mod in between? If so, which mod(s)?
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Old 08-08-2013, 12:58 PM   #118
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Is see those runs were about 45 minutes apart. Did you add a mod in between? If so, which mod(s)?
If you check the date it's been a while since it got dynoed lol but I do believe it was the throttle body that was added
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Old 08-08-2013, 01:37 PM   #119
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So you did a run, added the TB, and did another run? Just clarifying.

Wow. 8HP and 7.5 ft-lbs of torque from the TB is the most I've seen.
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Old 08-08-2013, 05:57 PM   #120
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The date is the same between the two dyno runs? I dynoed my car with just the CAI in 2012 and put down 270, earlier this year I dyno'ed again with the ported TB added and only "gained" 3rwhp - the dyno operator said he'd chalk the 3rwhp to a cooler running engine more than the ported TB.
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Old 08-09-2013, 11:17 AM   #121
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Type and make of dyno: DynoJet
ODO at the time of the dyno: 8,353
Temperature: 85*
Manual/auto: Manual 6-speed
Gear used(3rd or 4th): 3rd gear
Modifications: Injen cold air intake (long one)
Correction used(STD or SAE): STD
Result: 277.56 hp / 239.81 tq


Last edited by PR325xi; 08-09-2013 at 11:36 AM.
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Old 08-09-2013, 12:17 PM   #122
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Updated!

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Old 08-09-2013, 08:43 PM   #123
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Quote:
Originally Posted by PR325xi View Post
Type and make of dyno: DynoJet
ODO at the time of the dyno: 8,353
Temperature: 85*
Manual/auto: Manual 6-speed
Gear used(3rd or 4th): 3rd gear
Modifications: Injen cold air intake (long one)
Correction used(STD or SAE): STD
Result: 277.56 hp / 239.81 tq



HAHA those numbers sound familiar to me.
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Old 09-08-2013, 02:12 PM   #124
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Went to FSP this morning and got some dyno runs to post with and without Nitrous 100shot. The NOS comes in at 3000rpm and off at 6600rpm. Again the weather was less then ideal.


Here are my NA compared to NOS numbers:279hp/247Tq and 345hp/346Tq(I did have another pass on NOS that yielded 354Tq but hp dropped a little to 343hp)
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Old 09-08-2013, 02:16 PM   #125
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Last year I did a few dyno pulls on a Dynojet prior to gears, tune, HFC, and Xpipe and my numbers were 269hp and 236TQ. 92 degrees w/58% humidity. Used a Dynojet with SAE correction. 11,100 miles. The pulls from this morning at 31,000 miles u can see had higher temps and higher humidity and were done on a Mustang Dyno. I am sure I lost a few ponies with the crappy weather. I was told having the 3.91's will hurt dyno numbers too, but low 1/4 mile times are the goal. And yes, stock 20" rims
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