How much improvement can be had with tune revisions? - 2017 Ford Fusion V6 Sport Forum
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post #1 of 17 (permalink) Old 09-08-2019, 11:32 PM Thread Starter
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How much improvement can be had with tune revisions?

Long time follower, first time posting. My company rents out a local track every year, and this is my second year out with the Sport. Last year i was able to dial in a 1.988 60ft [email protected] MPH completely stock. This year i went out with just a unleashed 93 tune. Flashed car about 5 days ago and noticed a night and day difference on the street. Only got the chance to run twice, best being a 1.88 60ft 13.674 @99mph. temps were about the same. My launches this year included a ton of wheel hop and spinning so there is time to be made up there, but i figured i would of at least trapped higher.

going to do some data logging and send them in to see if a revision could help as well. curious to see if anyone has noticed a big change, or if its minimal.
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post #2 of 17 (permalink) Old 09-08-2019, 11:55 PM
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RMM will help your wheel spin and hopping issue.
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post #3 of 17 (permalink) Old 09-09-2019, 12:02 AM Thread Starter
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Quote:
Originally Posted by Oreo View Post
RMM will help your wheel spin and hopping issue.
Ordered one from CPE as soon as I got home, ran one on my ST and it helped quite a bit. Curious to see how that will translate to the track. Thanks for the tip.
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post #4 of 17 (permalink) Old 09-09-2019, 11:11 AM
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Actual weight?
DA?
Track prepped that day/night?

You are 6-8 tenths and more importantly, 6-8 MPH off where you should be.
with that 60', unless DA and/or prep where rediculous/non exsistant.

Also, I think Torrie sends out first tune pretty conservative, until you datalog.
Not sure how many here have run 12's @ 106 or better, but did not datalog/revise initial
tune at all.
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post #5 of 17 (permalink) Old 09-09-2019, 02:28 PM
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Check plug gap and set to 0.026". I thought it was a gimmick, but I just gaped mine last week and there was a noticeable difference under high load/boost. The car consistently pulls stronger now.

Also, look into a catch can. Lots of guys are reporting seeing it fill during a track day since you are pushing the engine very hard. Otherwise all that oil goes into the engine and does who knows what with your timing.
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post #6 of 17 (permalink) Old 09-09-2019, 02:34 PM Thread Starter
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Originally Posted by OX1 View Post
Actual weight?
DA?
Track prepped that day/night?

You are 6-8 tenths and more importantly, 6-8 MPH off where you should be.
with that 60', unless DA and/or prep where rediculous/non exsistant.

Also, I think Torrie sends out first tune pretty conservative, until you datalog.
Not sure how many here have run 12's @ 106 or better, but did not datalog/revise initial
tune at all.
Track DA was 2200. Prep seemed fine. My co worker was running consistent 10.5 passes in his rouschcharged 5.0 stang with no issues hooking. On slicks.

Didnt weigh the car but I had a half tank with a baby seat In the back that's about it.
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post #7 of 17 (permalink) Old 09-09-2019, 02:36 PM Thread Starter
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I know our systems are torque management based not target psi but my max psi on my runs were at 19psi. I've logged as high as 22psi on the street. I did just put the half tank in before I got there I wonder if maybe it was bad gas as well?
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post #8 of 17 (permalink) Old 09-09-2019, 02:45 PM Thread Starter
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Posted track slips for reference. DA on my stock run was 2900
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post #9 of 17 (permalink) Old 09-09-2019, 08:04 PM
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Quote:
Originally Posted by ChaseG View Post
Posted track slips for reference. DA on my stock run was 2900
So DA was even better this time? Definitely need some datalogging.
Maybe crappy batch of fuel, not getting full boost??

No increase in MPH means something is not right. I also just
noticed your 1/8 MPH was down 3 since last year.

I also just looked up the DA when I ran, -224
and my weight was 4020 (which I don't see possible
with many loaded sports).

Last edited by OX1; 09-09-2019 at 09:00 PM.
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post #10 of 17 (permalink) Old 09-09-2019, 08:51 PM
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I was thinking bad gas
If you can log, the timing will tell.
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