Lund e85 tune is slower then 93 tune.

[jakefed4]

Hello everyone I I have a FBO manual gen 2 and I just switched to my Lund e85 tune for the first time and the “e85” I had was e70, tuner said it was ok and he adjusted the tune a little. The car definitely has more torque but the top end seemed slower. Now I know an e85 tune isn’t like slapping a blower on but ya know I expected a little more. I have 2 videos that I have put side by side and both from exact 40-100 rolls starting and ending at the exact same time. The video during the day is a 93 tune not by Lund but by a local tuner and the one at night was the Lund e85 tune. I know in the 93 video I was shifting faster but I went into CapCut (editing software) and cut the videos and had 1 of each from 40-60, 60-80, 80-100, so the shifting wouldn’t necessarily matter, they are both very close but the 93 is a tiny but faster and I’m just curious why the e85 tune would be a little slower from the 93 tune. Is this because of the e70 and not e85. From my understanding e70 and e85 would be very close in how much power they add. I unfortunately don’t have a video of my lund 93 tune but I’m just curious on why the Lund e85 tune is a little slower then the other companies 93 tune. I know Lund has to work in a safe sand box but do they really play it that safe with their tunes?

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[2019GT]

Were you on identical strips of road, identical DA and weather?

Seriously, those two factors alone could explain the difference in performance.

 

[CrackedHorn]

Like 2019GT posted, other variables can easily be at play. E85 on a gen 2 NA will only add ~10hp or so.

 

[robvas]

If you don't have something to actually record and compare data (dragy or timeslips)...

 

[jakefed4]

It was the same road and yes I understand temps and conditions matter. Thanks for the input guys!

 

[Pistol_91]

A good custom 93 tune with timing adjusted accordingly isn't going to feel much different than a generic Lund e85 tune. That being said I don't see how it can be "slower". Get a proper measuring device or take both tunes to the dyno or track and compare if you really think it's "slower".

 

[NightmareMoon]

My understanding is that E85 has minimal value over a good 93 tune on an N/A car. Its more volume of fuel which can cool the intake charge which helps boosted cars more than it helps N/A cars. You can probably get the timing you want, but if you’re getting the timing you need with 93, E85 isnt going to do much. You’re still limited by the oxygen you can cram into the cylinders.

 

[K4fxd]

From looking at some logs from a certain tuner I think he adds too much timing with the E85 tunes and this is why it went slower than your 93 tune.
Of course it could have been conditions too. I see 1 second faster times, 40 to 100, with -800 D/A compared to +3000 which is more normal here in the summer.

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