Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com - View Single Post - Finally--VMS Stage 2.5 cam Dynojet results, nice gains!

topgun1 · 09-04-2010, 09:00 PM

After several scheduling conflicts, I finally got the car on the dyno after more than a month since the cam was installed and I am real pleased! I got the results I was looking for. I took it to my man Thomas at Precision Dyno in Belmont, NC (near Charlotte). The weather was great, cooler and drier than it has been, temps ranging from low 70's through low 80's during tuning. We had a total of 13 runs with my 12th being the best. We did some moderate tuning on it. Below is some background runs from my first dyno numbers through my current so you can see the progression all the way up to the cam dyno tune:

First dyno pull ever 3/19/10 on AWD dyno at 3SX Performance (K&N intake, 3" Magnaflow catback, no tune):

378.3 RWHP
373.5 RWTQ

Dyno run on 5/7/10 on Dynojet dyno at Total Performance (K&N intake, 3" Magnaflow catback, no tune):

376.84 RWHP
367.38 RWTQ Temp 89F

Best dyno run on 6/26/10 on Dynojet dyno at Total Performance (K&N intake, Doug Thorley 1 3/4" shorty headers, SOLO hiflow cats, 3" Magnaflow catback, HP tune):

404.03 RWHP
393.47 RWTQ Temp 100.5F

Gain of 27.19 RWHP and 26.09 RWTQ from 5/7/10 Dynojet run

NOW, for today's results: First dyno pull today after warmup 9/4/10 on Dynojet at Precision Dyno (K&N intake, Doug Thorley 1 3/4" shorty headers, SOLO hiflow cats, 3" Magnaflow catback, VMS Stage 2.5 cam kit (LSA Comp Cam 227/239 on 114 .613 .623), no tuning):

423.9 RWHP
404.2 RWTQ Approx Temp 72F

Gain of 19.87 RWHP and 10.73 RWTQ from previous 6/26/10 dyno run prior to cam.

So after this, we started tuning and doing more runs. I was in the driver's seat which was a blast!! Thomas was tuning on the HP. First main thing was to increase the idle speed, it was idling at 500 rpm. We started high adjusting it to 900 rpm, but was too high, couldn't hear the lope. We ended up bringing it down to 775 rpm and was perfect. We ended up running the a/c later, and ran great, we drove around town, never stalled once. Just the right amount of lope, not shaking nearly as much, alot smoother and sounded awesome (will do a video tomorrow). I couldnt' take but 2 photos and no video since my batteries died in the camera.

Next thing we noticed was that car was running rich. I noticed a stout gas smell after the cam was installed. The a/f mix was at around 11.8. We leaned it out up to 13.8, it didn't really like it and we found the best spot the car liked was around 12.7 to 13.1 a/f ratio. So that's where we kept it.

Next we checked the temps when the coolant fans would come on and adjusted them to come on at 45% power at 175F, up through 90% power at 215F (Thomas, correct me if I'm wrong on this).

We started running into problems hitting the rev and/or speed limiter so we raised the electronic speed limiter to 170 mph. We were getting the car kicking into safe mode after getting the high speed warning and reducing engine power. It would come on right around 6400-6500 rpm. So after that was fixed, we didn't get the dash messages anymore.

Torque management was shut off from before, so no change there.

The last thing was modifying the timing. We started with -2 degrees of timing and the car liked it and responded well. We ended up taking out 1 more degree, total of -3 degrees of timing and that's where we ended up and had our best dyno pull of the day:

450.4 RWHP
422.5 RWTQ Approx temp 80F

Now based on the actual conditions at that time, it was 460 RWHP (STD), but I know people freak out when you don't use SAE!

That was a gain of and additional 26.5 RWHP and 18.3 RWTQ in just tuning from the first pull earlier in the morning. So overall, from before the cam was installed, we saw gains of 46.37 RWHP and 29.03 RWTQ with the cam tuned! I'm very happy with the numbers. I was hoping for 450 and got it

So with an average 15% drivetrain loss considered, I should safely be in the 500 bhp club (~518 hp at the crank and ~486 tq). It's a good feeling.

So with all mods (do not have a run w/o the intake or catback exhaust), based on the 5/7/10 "baseline" dyno, I've seen gains of 73.56 RWHP and 55.12 RWTQ, so likely a few more ponies prior to the intake and exhaust. I can't complain about that!

Overall I'm really happy with the cam tuning results and performance gains. Thanks to Thomas at Precision Dyno for the fantastic tuning job and much thanks to the guys at Vector and Comp Cams.

Now to get to the track and put these numbers to the test!

Graphs are below in chronological order with today's last.

09-04-2010, 09:00 PM	#1
topgun1 Drives: 10 SIM 2SS/RS LS3 Join Date: May 2008 Location: Winston-Salem, NC Posts: 1,939 View My Garage	Finally--VMS Stage 2.5 cam Dynojet results, nice gains! After several scheduling conflicts, I finally got the car on the dyno after more than a month since the cam was installed and I am real pleased! I got the results I was looking for. I took it to my man Thomas at Precision Dyno in Belmont, NC (near Charlotte). The weather was great, cooler and drier than it has been, temps ranging from low 70's through low 80's during tuning. We had a total of 13 runs with my 12th being the best. We did some moderate tuning on it. Below is some background runs from my first dyno numbers through my current so you can see the progression all the way up to the cam dyno tune: First dyno pull ever 3/19/10 on AWD dyno at 3SX Performance (K&N intake, 3" Magnaflow catback, no tune): 378.3 RWHP 373.5 RWTQ Dyno run on 5/7/10 on Dynojet dyno at Total Performance (K&N intake, 3" Magnaflow catback, no tune): 376.84 RWHP 367.38 RWTQ Temp 89F Best dyno run on 6/26/10 on Dynojet dyno at Total Performance (K&N intake, Doug Thorley 1 3/4" shorty headers, SOLO hiflow cats, 3" Magnaflow catback, HP tune): 404.03 RWHP 393.47 RWTQ Temp 100.5F Gain of 27.19 RWHP and 26.09 RWTQ from 5/7/10 Dynojet run NOW, for today's results: First dyno pull today after warmup 9/4/10 on Dynojet at Precision Dyno (K&N intake, Doug Thorley 1 3/4" shorty headers, SOLO hiflow cats, 3" Magnaflow catback, VMS Stage 2.5 cam kit (LSA Comp Cam 227/239 on 114 .613 .623), no tuning): 423.9 RWHP 404.2 RWTQ Approx Temp 72F Gain of 19.87 RWHP and 10.73 RWTQ from previous 6/26/10 dyno run prior to cam. So after this, we started tuning and doing more runs. I was in the driver's seat which was a blast!! Thomas was tuning on the HP. First main thing was to increase the idle speed, it was idling at 500 rpm. We started high adjusting it to 900 rpm, but was too high, couldn't hear the lope. We ended up bringing it down to 775 rpm and was perfect. We ended up running the a/c later, and ran great, we drove around town, never stalled once. Just the right amount of lope, not shaking nearly as much, alot smoother and sounded awesome (will do a video tomorrow). I couldnt' take but 2 photos and no video since my batteries died in the camera. Next thing we noticed was that car was running rich. I noticed a stout gas smell after the cam was installed. The a/f mix was at around 11.8. We leaned it out up to 13.8, it didn't really like it and we found the best spot the car liked was around 12.7 to 13.1 a/f ratio. So that's where we kept it. Next we checked the temps when the coolant fans would come on and adjusted them to come on at 45% power at 175F, up through 90% power at 215F (Thomas, correct me if I'm wrong on this). We started running into problems hitting the rev and/or speed limiter so we raised the electronic speed limiter to 170 mph. We were getting the car kicking into safe mode after getting the high speed warning and reducing engine power. It would come on right around 6400-6500 rpm. So after that was fixed, we didn't get the dash messages anymore. Torque management was shut off from before, so no change there. The last thing was modifying the timing. We started with -2 degrees of timing and the car liked it and responded well. We ended up taking out 1 more degree, total of -3 degrees of timing and that's where we ended up and had our best dyno pull of the day: 450.4 RWHP 422.5 RWTQ Approx temp 80F Now based on the actual conditions at that time, it was 460 RWHP (STD), but I know people freak out when you don't use SAE! That was a gain of and additional 26.5 RWHP and 18.3 RWTQ in just tuning from the first pull earlier in the morning. So overall, from before the cam was installed, we saw gains of 46.37 RWHP and 29.03 RWTQ with the cam tuned! I'm very happy with the numbers. I was hoping for 450 and got it So with an average 15% drivetrain loss considered, I should safely be in the 500 bhp club (~518 hp at the crank and ~486 tq). It's a good feeling. So with all mods (do not have a run w/o the intake or catback exhaust), based on the 5/7/10 "baseline" dyno, I've seen gains of 73.56 RWHP and 55.12 RWTQ, so likely a few more ponies prior to the intake and exhaust. I can't complain about that! Overall I'm really happy with the cam tuning results and performance gains. Thanks to Thomas at Precision Dyno for the fantastic tuning job and much thanks to the guys at Vector and Comp Cams. Now to get to the track and put these numbers to the test! Graphs are below in chronological order with today's last. Attached Images __________________ 5th Gen Camaros of the Carolinas SIM, 2SS/RS LS3 5/7/11 453.9 RWHP 427.5 RWTQ VMS Stage 2.5 Comp Cams kit, Cold Air Inductions intake, ADM race scoop, DT 1 3/4" headers, Solo cats, 3" Magnaflow catback, Pypes cutouts, HP tune, H&R SuperSport springs, Eibach sways/spacers, TexasSpeed UD pulley, LSR tensioner pulley, Barton shifter, skip shift eliminator, powder-coated calipers, R1 concept rotors, StopTech pads, Granatelli wires, Lloyds mats, tint, AAC afterburner taillamps, AAC scanner/sidemarkers, SRP pedals, custom engine cover, black bowties, Ridergraphix hood spears.... Last edited by topgun1; 09-09-2010 at 05:28 PM.