Lund Flex Tune First Impressions on 93

[michail71]

Got this on my second fill from a RaceTrack. The learned flag tripped much faster too.

The first start after loading E85R was kind of interesting. A few seconds after starting the engine/exhaust sound suddenly changed and then the idle started bouncing between 750-1100 RPM. I restarted to run an idle log for Lund but it seemed to return to normal.

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[michail71]

Yes, but it directly translates to the driver demand table. Having a non-linear pedal translation leads to sudden surges of power.

I think I did experience that today but it's also typical with the 10R80's downshifts that sometimes come out of nowhere.

My last car was a Benz, the throttle one that had a mind of it's own. It would insist on an eco response and then go into oh s*** mode after you held it in WOT as you were about to cut someone off unintentionally. The BMWs from the the period were doing the same thing (even at the AMG/M car levels). It had to do with them trying to meet Germany's efficiency requirements.

 

[65sohc]

How many miles have people gone on the flex fuel tune? 30k 40k 50k? Would like some feedback

I have almost three years and 20,000 miles on the Lund flex tune/JLT CAI combo in my GT350 and it has been flawless. My son just got a stock '16 GT350 so I can do a back to back comparison. The difference between 91 (California) and e78 (what mine usually turns out to be) is dramatic. If someone is going to tune and has access to e85 they'd be crazy not to go for flex.

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