baseline gts mustang dyno results
08-25-2008, 04:08 PM
#1
Drifting
Thread Starter
baseline gts mustang dyno results
I just got my baseline dyno results today...
this is with:
devek crossover
sharktuned at idle and cruise only
Do you think the irregular A:F ratio at the higher rpm is a bad Maf, or due to need of WOT sharktuning need ( haven't done yet), or irregular fuel delivery.. I guess if I leaned it up a little I would expect a little more documented Hp and torque.
thanks for your input .
andy
this is with:
devek crossover
sharktuned at idle and cruise only
Do you think the irregular A:F ratio at the higher rpm is a bad Maf, or due to need of WOT sharktuning need ( haven't done yet), or irregular fuel delivery.. I guess if I leaned it up a little I would expect a little more documented Hp and torque.
thanks for your input .
andy
08-25-2008, 06:12 PM
#2
Nordschleife Master
My Dyno jet run with both of my GTS's showed 283RWHP (92) 286RWHP (94) and 304RWTq (92) 308RWTq (94)... Both cars near to identical and of course easily a factor of the day and the '94 has/had 48k miles while the '92 has/had 130k miles!!!
08-25-2008, 06:32 PM
#3
Drifting
Thread Starter
James,
What do you think about the AF curve?
The Hp = 325 is cool but it looks like the lh is letting it run a little rich.And I called and verified that these results are SAE corrected.
Thanks for your input
andy
What do you think about the AF curve?
The Hp = 325 is cool but it looks like the lh is letting it run a little rich.And I called and verified that these results are SAE corrected.
Thanks for your input
andy
08-25-2008, 07:56 PM
#4
Nordschleife Master
Andy,
I don't know enough to comment on such things! I have not played w/ tuning much at all! There are many others here who will chime in soon enough with some real help!
Best,
I don't know enough to comment on such things! I have not played w/ tuning much at all! There are many others here who will chime in soon enough with some real help!
Best,
08-27-2008, 06:20 AM
#5
Rennlist Member
Hello Andy,
There is some jitter on the A/F results, this may be a noise problem.
The jitter seems to be more an issue with the dyno's WBO2 ?
The general trend of A/F getting too rich at the top end is typical for the 928 >87.
You will pick up some power once you lean that out to 13.5:1.
There is some jitter on the A/F results, this may be a noise problem.
The jitter seems to be more an issue with the dyno's WBO2 ?
The general trend of A/F getting too rich at the top end is typical for the 928 >87.
You will pick up some power once you lean that out to 13.5:1.
08-27-2008, 06:30 AM
#6
Drifting
Thread Starter
thanks for the input. I wanted to make sure the jiggles weren't pathos for anything obvious as I am a greenhorn with this stuff...thanks again
andy
andy
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08-27-2008, 10:40 AM
#8
Supercharged
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Andy-
In general, you should be happy with those dyno results. Yes, there are some gains to had with the AFR, but not much. We're talking about 5-10 RWHP for trimming that out.
Did you record any knocks? If not, you might try advancing the ignition a bit. Ignition timing is where the real power gains are (if not optimized already). You may also want to reduce how much timimng is pulled out for a knock event and the rate of recovery (Knock Control). I believe the stock settings are to pull 3º and recovery is 10 seconds. I would reduce these settings to 1º and 1 second. This will help maintain stronger performance in case of a knock event.
In general, you should be happy with those dyno results. Yes, there are some gains to had with the AFR, but not much. We're talking about 5-10 RWHP for trimming that out.
Did you record any knocks? If not, you might try advancing the ignition a bit. Ignition timing is where the real power gains are (if not optimized already). You may also want to reduce how much timimng is pulled out for a knock event and the rate of recovery (Knock Control). I believe the stock settings are to pull 3º and recovery is 10 seconds. I would reduce these settings to 1º and 1 second. This will help maintain stronger performance in case of a knock event.
08-27-2008, 01:01 PM
#9
Rennlist Member
It looks good. where you use the GTS at WOT is in the 12.5:1 range which is ideal. But, as you see, it richens up to 11.5:1 which is not horible, but its not really a big issue , but a waste of gas and a sligtht loss of power. It looks like my fuel air now with the fuel regulator and the 6.5 liter and 30lb injectors. what injectors does the GTS use???? does anyone know?
08-27-2008, 03:23 PM
#11
Rennlist Member
Im running near 58psi and it was a little on the lean side, so we turned it up , net, a 1/4 turn. Ill measure the new pressure, but i think its going to be near 60psi. 420rwt/365rwhp 13 to 11:1 range from 2800rpm to 6000rpm.
mk
mk
08-27-2008, 03:27 PM
#12
Rennlist Member
I found that the starting rpm has a lot to do with the fuel mixture initially .
my curves initially on the Holbert car were the same peak as this.
fuel was almost perfect from 13:1 to 12.5:1 over the entire range. either the RRFR can help with smoothing this fuel curve out, or you can start at a lower rpm to see what the real ratios are. you are starting at near 3500rpm, as I did recently to reduce WOT time on the new engine (stroker) but if its not new just start at 2800rpm or lower to get the full picture of the HP and fuel curves.
Mk
my curves initially on the Holbert car were the same peak as this.
fuel was almost perfect from 13:1 to 12.5:1 over the entire range. either the RRFR can help with smoothing this fuel curve out, or you can start at a lower rpm to see what the real ratios are. you are starting at near 3500rpm, as I did recently to reduce WOT time on the new engine (stroker) but if its not new just start at 2800rpm or lower to get the full picture of the HP and fuel curves.
Mk
08-27-2008, 05:16 PM
#13
Drifting
Thread Starter
thanks all for your input,
Andrew, I still havent troulble shooted the crazy knock counts...9999 in couple minutes at idle. But I will finish the WOT sharktune work First then look at the EZK and those crazy knocks..
Mark, yes the injectors were 19 lbs but carl's kit uses 24 lbs and I am thinking of going to 42 lbs for the boosted application coming up.
John, I am still wonder struck over the ease of use of the sharktuner....so much fun.
Andrew, I still havent troulble shooted the crazy knock counts...9999 in couple minutes at idle. But I will finish the WOT sharktune work First then look at the EZK and those crazy knocks..
Mark, yes the injectors were 19 lbs but carl's kit uses 24 lbs and I am thinking of going to 42 lbs for the boosted application coming up.
John, I am still wonder struck over the ease of use of the sharktuner....so much fun.
08-28-2008, 05:46 AM
#14
Rennlist Member
Hi Andy
With Sharktuner monitoring the EZK, are the other measurments (RPM etc) OK on the System Monitor screen, and just the knock count that is crazy ?
Do you know the condition of your knock sensor ?
With Sharktuner monitoring the EZK, are the other measurments (RPM etc) OK on the System Monitor screen, and just the knock count that is crazy ?
Do you know the condition of your knock sensor ?
08-28-2008, 07:33 AM
#15
Drifting
Thread Starter
hp
sorry it took me so long to respond,
John,
I don't have any other abnormalities showing up and the knock sensors and hall sensor are "green" on the sharktuner..I was thinking of just replacing all three and checking again as the car is 15 years old.
I did read the write up Andrew has done on his sharktuning experience and knock counts...Thanks for all your help!
andy
John,
I don't have any other abnormalities showing up and the knock sensors and hall sensor are "green" on the sharktuner..I was thinking of just replacing all three and checking again as the car is 15 years old.
I did read the write up Andrew has done on his sharktuning experience and knock counts...Thanks for all your help!
andy