Had my car dyno'ed today!!
#16
06-25-2008, 06:23 PM
15-17% loss through the G50 tranny is standard. If running AWD, then 22-25% is normal. Tom is just RWD these days. Also this was the second run and down from the first run at 575. Just the dyno operator did not save it. But still, this ain't a bad pic. We could have done it on a Dynojet and gotten an extra 75HP 
Also on the dyno (the dyno is a Land and Sea), the AFRs lag a little from the HP / Torque curves on the graphic output. If you notice, the AFRs do not change when I hit the gas at 3000 rpms. They do not change until 4000. So the lag to reality is just over 1000 RPMS. So at peak torque, the AFRs are more like 12 not 14. We are adding a little more fuel though to make the AFRs are little richer and try to get down to the 12s a little faster.
Also on the dyno (the dyno is a Land and Sea), the AFRs lag a little from the HP / Torque curves on the graphic output. If you notice, the AFRs do not change when I hit the gas at 3000 rpms. They do not change until 4000. So the lag to reality is just over 1000 RPMS. So at peak torque, the AFRs are more like 12 not 14. We are adding a little more fuel though to make the AFRs are little richer and try to get down to the 12s a little faster.
Last edited by viperbob; 06-25-2008 at 06:35 PM.
#17
06-25-2008, 06:43 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209 
If you are referring to the AFRs... you dont want to run more then 12.5 on 100 octane... but just from experience I can tell you that 2 gallons of 109 unleaded or even C16 would drop it .3 and you can run more boost....
I know exactly how someone does it and has never blown a motor... he even ran his car to 1.7 bars.... did a leak down and compression test and it was perfect.... it all comes down to fuel.... and if I were you I would use something better then 100 if you running the car hard at the track ... then you really can open it up at 1.3 bars....
You can buy a remote hi to lo and vice versa switch for the greddy... its a cool thing because if you have long stretches at the track you hit the button on ur steering wheel to high boost - pass everyone up and and hit the remote button before the corner and drop the boost to 1.1 bars or 1 bar lets say.... that way your not coming into the corner with too much power.... and have more control in the turn etc....
just a thought....
markski
I know exactly how someone does it and has never blown a motor... he even ran his car to 1.7 bars.... did a leak down and compression test and it was perfect.... it all comes down to fuel.... and if I were you I would use something better then 100 if you running the car hard at the track ... then you really can open it up at 1.3 bars....
You can buy a remote hi to lo and vice versa switch for the greddy... its a cool thing because if you have long stretches at the track you hit the button on ur steering wheel to high boost - pass everyone up and and hit the remote button before the corner and drop the boost to 1.1 bars or 1 bar lets say.... that way your not coming into the corner with too much power.... and have more control in the turn etc....
just a thought....
markski
#18
06-25-2008, 06:47 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209
I agree and I would be more comfortable with your numbers, thanks
#19
06-25-2008, 06:48 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209 totally agree and that is the first thing I said. Bob has been in constant contact with Todd at Protomotive fine tuning the programing also
#20
06-25-2008, 06:50 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209 I will take good care of the engine you delivered to me I promise!!
#21
06-25-2008, 06:54 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209
Kevin, good comment and we agree, changing the programing. I appreciate this engine you got me and promise to take good care of it!!
#22
06-25-2008, 06:57 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209 15-17% loss through the G50 tranny is standard. If running AWD, then 22-25% is normal. Tom is just RWD these days. Also this was the second run and down from the first run at 575. Just the dyno operator did not save it. But still, this ain't a bad pic. We could have done it on a Dynojet and gotten an extra 75HP
Also on the dyno (the dyno is a Land and Sea), the AFRs lag a little from the HP / Torque curves on the graphic output. If you notice, the AFRs do not change when I hit the gas at 3000 rpms. They do not change until 4000. So the lag to reality is just over 1000 RPMS. So at peak torque, the AFRs are more like 12 not 14. We are adding a little more fuel though to make the AFRs are little richer and try to get down to the 12s a little faster.
Also on the dyno (the dyno is a Land and Sea), the AFRs lag a little from the HP / Torque curves on the graphic output. If you notice, the AFRs do not change when I hit the gas at 3000 rpms. They do not change until 4000. So the lag to reality is just over 1000 RPMS. So at peak torque, the AFRs are more like 12 not 14. We are adding a little more fuel though to make the AFRs are little richer and try to get down to the 12s a little faster.
#24
06-25-2008, 07:13 PM
Correct. With a 5 bar and the a/f shown at redline the car is making much closer to 600 crank then 700.
With the 5 bar, the car will actual start to lean out due to a complete lack of fuel at or around 630 crank.
#25
06-25-2008, 07:34 PM
Join Date: Oct 2005
Location: tampa florida
Posts: 3,577
Rep Power: 209
do you have any suggestions on the set up of this car for running at the track Tony? Not looking for alot of HP just 600 reliable ones!
#27
06-25-2008, 07:53 PM
.
#29
06-25-2008, 08:36 PM
60lb injectors... pronto. Either that or dial back the boost. Also, it would be a good idea to log injector duty cycle with a durametric.