Btr stage 4 results - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

whynot · 03-28-2016, 03:07 PM

Not sure about his tuning proses. The car is going back there end of next week. He us going to pull the rear section of the exhaust off and see what happens.

CGT · 03-28-2016, 03:21 PM

That horsepower number would be about right using SAE on the dynojet I regularly use, for the those modifications. But...the torque a little lofty. I would definitely see what some other 5th gens have put down on that dyno for comparisons sake.

DocRez · 03-28-2016, 05:14 PM

I actually just had my car tuned on Saturday with this cam. I made 487/437 on a dyno jet.
I did 2" TSP headers no cats into NPP and a 25% under drive. My tuner said there is another 5-10 Hp in but my car ran low on fuel so tuning stopped.

USAFS197 · 03-28-2016, 05:40 PM

Sounds like a new tuner is in order.

whynot · 03-28-2016, 05:52 PM

Yeah I was thinking new tuner was in order

christianchevell · 03-28-2016, 06:33 PM

its the 3.91 gears: actually is one of the things I have heard about sometimes dynoing lower due to the ratio, and the loss from power going to the engine more revving higher for the same amount of drum movement on a dyno...... and some figuring basing all the hp figures off the torque exerted and that's one reason the formula that always makes hp and torque cross on the dyno at 5250 rpm and whatever formula used in the calculating.

http://www.corvetteforum.com/forums/...nd-ratios.html

That in combination of your going with a fairly street friendly and not too high lift of cam:

•Advertised Duration: 233 / 248 (intake/exhaust)
•Duration @ .050: 233 / 248
•Lift: .619"/.595"
•Lobe Seperation: 113+5

Read more: http://www.phastekperformance.com/BT...#ixzz44FBGk26F

And the data being smoothed with knock a few HP and TQ off the peak......

NGC660 · 03-28-2016, 06:50 PM

I just got my BTR stage 4 installed. Made 467 at the wheels. All mods are in my signature and I was a little lower than I was hoping. Especially with the motor mounts and under drive to reduce loss from the crank to the wheels. But there are a lot of things that factor into dyno results. Atmospheric variables, fuel quality, etc. It wont be killer differences but it could be part of it.

cc-rider · 03-28-2016, 06:55 PM

Quote:

Originally Posted by christianchevell

its the 3.91 gears: actually is one of the things I have heard about sometimes dynoing lower due to the ratio, and the loss from power going to the engine more revving higher for the same amount of drum movement on a dyno...... and some figuring basing all the hp figures off the torque exerted and that's one reason the formula that always makes hp and torque cross on the dyno at 5250 rpm and whatever formula used in the calculating.

http://www.corvetteforum.com/forums/...nd-ratios.html

That in combination of your going with a fairly street friendly and not too high lift of cam:

•Advertised Duration: 233 / 248 (intake/exhaust)
•Duration @ .050: 233 / 248
•Lift: .619"/.595"
•Lobe Seperation: 113+5

Read more: http://www.phastekperformance.com/BT...#ixzz44FBGk26F

And the data being smoothed with knock a few HP and TQ off the peak......

Those are all good points. There are a lot of games that can be played with a dyno to make things look higher. Seems like your dyno guy is doing the right thing and showing you SAE power with a 5 smoothing. Just have him switch the smoothing to 0 and you'll gain power on paper.

Don't get too hung up on a dyno number. If your car is tuned in and runs great....that's what is important. Be careful comparing your number to someone else's glory pull. Data can be fudged so easily with a dyno...and often is to make the numbers match what people want it to be.

whynot · 03-28-2016, 07:06 PM

Thanks for the info on the gear change. That definitely makes some sense. I am not really chasing dyno numbers. Just want to make sure I am getting what the cam is capable of. I will say that the car does run very well. No surging or bucking under light load.

RealQuick · 04-02-2016, 10:44 PM

Peak rpm seems low (6000rpm).

Bo White · 04-03-2016, 10:57 AM

Going to 3.91 gears really hasn't changes power on a few cars I've seen. They still make basicly the same power on the dyno.

BFASTNOTLAST · 04-03-2016, 11:11 AM

Quote:

Originally Posted by Bo White

Going to 3.91 gears really hasn't changes power on a few cars I've seen. They still make basicly the same power on the dyno.

Copy that, mine made no more or no less with the change.

chozn4service · 04-03-2016, 11:26 AM

I have a 2011 2SSRS with ARH headers W/ high flow cats, SLP catback exhaust and had BTR Stage 2 came done last April. I have a L99 so the LS3 conversion was done and my end results was 450rwhp with 423rwtq. Built, Tuned and Dyno'd by Hoosier Street Cars in Lafayette, IN. Joseph Enrico is the bomb! He just did my buddy's car this past week, 2010 LS3 and he did a BTR Stage 2 and his numbers are 457rwhp with 441rwtq and tons of midrange power. Not bad for a small cam in these cars.

Jok3rswi1d · 04-03-2016, 11:31 AM

I have a btr stage 4 and have had 2 tuners because I was leary of the first numbers. My first numbers were 451 hp and 414 tq after tune. I then went to another tuner with same dyno with very similar conditions. About 70 degrees and little humididy and without any changes made 477 hp and 443 tq. He ended up making no changes in the tune.

03-28-2016, 05:40 PM	#18
USAFS197 Drives: 2018 Audi TT RS Join Date: Jan 2014 Location: Navarre, Florida Posts: 1,915	Sounds like a new tuner is in order. __________________ 2018 Audi TT ▊RS 2.4X 0-60, 1.6X 60', 120+mph 1/8th, 4.XX 60-130, 150+mph traps on 255/35/18 R888R tires on the street (unprepped). 2019 Audi RS3 About as fast as the TT RS 2019 Camaro ZL1 1LE Sold 2018 Camaro SS 1LE Sold 2019 Corvette Z06 Sold 2021 Charger Hellcat Redeye Widebody Sold

03-28-2016, 06:33 PM	#20
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,588 View My Garage	its the 3.91 gears: actually is one of the things I have heard about sometimes dynoing lower due to the ratio, and the loss from power going to the engine more revving higher for the same amount of drum movement on a dyno...... and some figuring basing all the hp figures off the torque exerted and that's one reason the formula that always makes hp and torque cross on the dyno at 5250 rpm and whatever formula used in the calculating. http://www.corvetteforum.com/forums/...nd-ratios.html That in combination of your going with a fairly street friendly and not too high lift of cam: •Advertised Duration: 233 / 248 (intake/exhaust) •Duration @ .050: 233 / 248 •Lift: .619"/.595" •Lobe Seperation: 113+5 Read more: http://www.phastekperformance.com/BT...#ixzz44FBGk26F And the data being smoothed with knock a few HP and TQ off the peak...... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

03-28-2016, 06:50 PM	#21
NGC660 Drives: 2012 Camaro 1SS Join Date: Aug 2015 Location: Brockton, MA Posts: 116	I just got my BTR stage 4 installed. Made 467 at the wheels. All mods are in my signature and I was a little lower than I was hoping. Especially with the motor mounts and under drive to reduce loss from the crank to the wheels. But there are a lot of things that factor into dyno results. Atmospheric variables, fuel quality, etc. It wont be killer differences but it could be part of it. __________________ 2012 1SS 467HP 421TQ Kooks Full exhaust BTR Stage 3 Cam BMR Suspension Tuned by Slowhawk Performance Sold 07/01/19

04-03-2016, 10:57 AM	#25
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,018	Going to 3.91 gears really hasn't changes power on a few cars I've seen. They still make basicly the same power on the dyno. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

04-03-2016, 11:26 AM	#27
chozn4service Drives: 2016 SS w/2SS A8 Blue Velvet Join Date: Dec 2009 Location: 39.793153,-86.238223 Posts: 3,678 View My Garage	I have a 2011 2SSRS with ARH headers W/ high flow cats, SLP catback exhaust and had BTR Stage 2 came done last April. I have a L99 so the LS3 conversion was done and my end results was 450rwhp with 423rwtq. Built, Tuned and Dyno'd by Hoosier Street Cars in Lafayette, IN. Joseph Enrico is the bomb! He just did my buddy's car this past week, 2010 LS3 and he did a BTR Stage 2 and his numbers are 457rwhp with 441rwtq and tons of midrange power. Not bad for a small cam in these cars. __________________ Never grow up, it's a trap!

03-28-2016, 03:07 PM	#15
whynot Drives: 2010 ss, 1991 z28, Join Date: Nov 2014 Location: ohio Posts: 41	Not sure about his tuning proses. The car is going back there end of next week. He us going to pull the rear section of the exhaust off and see what happens.

03-28-2016, 03:21 PM	#16
CGT Drives: 2011 SSm6 Join Date: Oct 2011 Location: St.Louis Posts: 355	That horsepower number would be about right using SAE on the dynojet I regularly use, for the those modifications. But...the torque a little lofty. I would definitely see what some other 5th gens have put down on that dyno for comparisons sake.

03-28-2016, 05:14 PM	#17
DocRez Drives: 2014 SS Join Date: Mar 2015 Location: Hawaii Posts: 18	I actually just had my car tuned on Saturday with this cam. I made 487/437 on a dyno jet. I did 2" TSP headers no cats into NPP and a 25% under drive. My tuner said there is another 5-10 Hp in but my car ran low on fuel so tuning stopped.

03-28-2016, 05:52 PM	#19
whynot Drives: 2010 ss, 1991 z28, Join Date: Nov 2014 Location: ohio Posts: 41	Yeah I was thinking new tuner was in order

03-28-2016, 07:06 PM	#23
whynot Drives: 2010 ss, 1991 z28, Join Date: Nov 2014 Location: ohio Posts: 41	Thanks for the info on the gear change. That definitely makes some sense. I am not really chasing dyno numbers. Just want to make sure I am getting what the cam is capable of. I will say that the car does run very well. No surging or bucking under light load.

04-02-2016, 10:44 PM	#24
RealQuick Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014 Location: Bridgewater Posts: 693	Peak rpm seems low (6000rpm).

04-03-2016, 11:31 AM	#28
Jok3rswi1d Drives: 2014 Camaro SS 1le Join Date: Feb 2016 Location: Roff, Ok Posts: 3	I have a btr stage 4 and have had 2 tuners because I was leary of the first numbers. My first numbers were 451 hp and 414 tq after tune. I then went to another tuner with same dyno with very similar conditions. About 70 degrees and little humididy and without any changes made 477 hp and 443 tq. He ended up making no changes in the tune.