Opinion on Dyno results HCI + nitrous
06-11-2018, 07:51 PM
#1
Opinion on Dyno results HCI + nitrous
I have an 09 Z06 that has a the Race Proven Motorsports HC package with their B3 cam, AI heads, 1-7/8 ARH, catless X-pipe, Mamo MSD, NW 102, Vararam, and 60LB injectors. When i got the car back from them last November it had 611 whp and 535 TQ. I recently added a nitrous outlet 102 plate kit and a stand alone fuel system with c16. I jetted the nitrous for 100 HP. I went to a local dyno jet dyno and the car made 569whp and 488 tq on motor and only 644HP and 570 tq on a 100 shot, bottle pressure was 950 and 3 degrees of timing was pulled using a LNC-2000.
It was really hot and very humid, and the nitrous doesn't turn on until 4700 RPM so that may explain why the TQ number didn't go a lot higher but I am pretty discouraged with the results N/A and with nitrous. I know every dyno reads a little different but 42whp is huge! I made an appointment to go to another dyno but thats a few weeks out anyone have any input on this?
It was really hot and very humid, and the nitrous doesn't turn on until 4700 RPM so that may explain why the TQ number didn't go a lot higher but I am pretty discouraged with the results N/A and with nitrous. I know every dyno reads a little different but 42whp is huge! I made an appointment to go to another dyno but thats a few weeks out anyone have any input on this?
06-11-2018, 07:55 PM
#2
A/F was low to mid 12's across the graph, nothing seems wrong and the car feels strong. I have only had it at an 1/8 mile track and the DA was over 1800 but I still saw several passes over 106 mph the highest being 106.9 mph
06-11-2018, 08:00 PM
#3
I have an 09 Z06 that has a the Race Proven Motorsports HC package with their B3 cam, AI heads, 1-7/8 ARH, catless X-pipe, Mamo MSD, NW 102, Vararam, and 60LB injectors. When i got the car back from them last November it had 611 whp and 535 TQ. I recently added a nitrous outlet 102 plate kit and a stand alone fuel system with c16. I jetted the nitrous for 100 HP. I went to a local dyno jet dyno and the car made 569whp and 488 tq on motor and only 644HP and 570 tq on a 100 shot, bottle pressure was 950 and 3 degrees of timing was pulled using a LNC-2000.
It was really hot and very humid, and the nitrous doesn't turn on until 4700 RPM so that may explain why the TQ number didn't go a lot higher but I am pretty discouraged with the results N/A and with nitrous. I know every dyno reads a little different but 42whp is huge! I made an appointment to go to another dyno but thats a few weeks out anyone have any input on this?
It was really hot and very humid, and the nitrous doesn't turn on until 4700 RPM so that may explain why the TQ number didn't go a lot higher but I am pretty discouraged with the results N/A and with nitrous. I know every dyno reads a little different but 42whp is huge! I made an appointment to go to another dyno but thats a few weeks out anyone have any input on this?
As for your N/A numbers, hot temps and humidity would have certainly caused a drop off but your SAE correction should have adjusted for that. Different dynos will read differently too. Do you know if your 611/535 were SAE or STD?
06-11-2018, 08:01 PM
#4
06-11-2018, 08:02 PM
#5
06-11-2018, 08:14 PM
#6
Safety Car
I think a 70rwhp/70rwtq gain over N/A on a 100shot (you probably jetted it very conservatively, too) is not bad. '
The rest of the combo I really can't speak to.
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Matt47FL (06-11-2018)
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Matt47FL (06-11-2018)
06-11-2018, 08:30 PM
#8
Are the "new" numbers SAE? If so, that _could_ account for about 20rwhp/20rwtq drop...and then factor in different dyno, etc.
I think a 70rwhp/70rwtq gain over N/A on a 100shot (you probably jetted it very conservatively, too) is not bad. '
The rest of the combo I really can't speak to.
I think a 70rwhp/70rwtq gain over N/A on a 100shot (you probably jetted it very conservatively, too) is not bad. '
The rest of the combo I really can't speak to.
However, i ran this cam with basically the same mods as you and I dyno'd at 598whp SAE in the summer so I suspect that the new dyno just reads low and I wouldn't think too much about it. You should have Fran send you a new dyno sheet with SAE numbers corrected a 5. This will at least give you a good idea what your car actually made.
The following users liked this post:
Matt47FL (06-11-2018)
06-11-2018, 08:30 PM
#9
Are the "new" numbers SAE? If so, that _could_ account for about 20rwhp/20rwtq drop...and then factor in different dyno, etc.
I think a 70rwhp/70rwtq gain over N/A on a 100shot (you probably jetted it very conservatively, too) is not bad. '
The rest of the combo I really can't speak to.
I think a 70rwhp/70rwtq gain over N/A on a 100shot (you probably jetted it very conservatively, too) is not bad. '
The rest of the combo I really can't speak to.
06-11-2018, 08:36 PM
#10
I suspect that the air is pretty good in DE in November so STD numbers would be very inflated over what SAE numbers would be in the summer.
However, i ran this cam with basically the same mods as you and I dyno'd at 598whp SAE in the summer so I suspect that the new dyno just reads low and I wouldn't think too much about it. You should have Fran send you a new dyno sheet with SAE numbers corrected a 5. This will at least give you a good idea what your car actually made.
However, i ran this cam with basically the same mods as you and I dyno'd at 598whp SAE in the summer so I suspect that the new dyno just reads low and I wouldn't think too much about it. You should have Fran send you a new dyno sheet with SAE numbers corrected a 5. This will at least give you a good idea what your car actually made.
06-11-2018, 08:41 PM
#11
Im going to take it to Stephen in a few weeks and run it on his dyno. Honestly dyno numbers don't mean much to me as long as the car performs as it should but the 42HP difference kinda freaked me out and made me think something was wrong with my car. Im chasing the sub 10 second 1/4 pass and just want to make sure my car is doing all it can with the mods I have.
06-11-2018, 08:42 PM
#12
06-11-2018, 08:48 PM
#14
Yes, unfortunately that was my car. He is putting it back together this week. Built trans, ARH 2" headers, Vette Air and new Cam.
NA should be close to 600 and I am also running a 250 shot, so I should be somewhere in the mid 800's on the juice.
What are you using for your nitrous controller? You should set it up to come on at a lower RPM and ramp it up progressively. I believe that Stephen made one pull on my B3 cam on his dyno and it put down 598whp. I am sure that he still has the graph so you can compare the two. However, Stephen did not tune my B3 cam.
Last edited by lamboworld; 06-11-2018 at 08:50 PM.
06-11-2018, 08:55 PM
#15
Im using a Nitrous Outlet WinMax, its basically just a digital window switch that reads throttle position and has an output for the LNC-2000. Stephen actually recommended that I use that. I talked about a getting a progressor but no one thought it was necessary with a 100 shot. The only reason I brought it in so late was to help with traction in 1st gear, if you shift near redline it never drops below ~4800 rpms so the nitrous will be active from 4700 rpms in 1st gear through the rest of track.
06-11-2018, 08:58 PM
#16
Im using a Nitrous Outlet WinMax, its basically just a digital window switch that reads throttle position and has an output for the LNC-2000. Stephen actually recommended that I use that. I talked about a getting a progressor but no one thought it was necessary with a 100 shot. The only reason I brought it in so late was to help with traction in 1st gear, if you shift near redline it never drops below ~4800 rpms so the nitrous will be active from 4700 rpms in 1st gear through the rest of track.
06-12-2018, 11:29 AM
#18
06-12-2018, 05:06 PM
#19
06-14-2018, 05:14 PM
#20
Drifting
611 STD to SAE is probably 6 flat or 595. I thought the RPM package had cars making 620-630+ to the wheels with the Mamo MSD/NW102. To hear you say 569 rwhp is a tad odd. The dyno is for tuning and read different so let us know what she makes this next round.