I've been thinking about a 1715 for my 03Lightning for awhile now and I'm concerned about the shift points, will the shift point rpm be raised higher than stock? If so how high? And can they still be set to stock rpm shifts with the 1715?

I also have a trans line mod valve and 2# lower and was curious if either would pose a problem. (on hp4 tune)

Thanks for the info.

 

how about even a normal 5.4, is the shift rpm raised? and how much?

thanks

 

sorry you have got no help but if you call this number he can help you.

Mike Troyer
Troyer Performance/Performance Products, Inc.
Truck & SUV Performance Specialists
Supercharging & Custom Tuning Experts - America's Oldest Superchips Distributor & 1st Superchips Custom Tuning Dealer
Web Site: TroyerPerformance.com
(540) 862-9515
Email: Sales@TroyerPerformance.com




buy the 9100 custom tuner!!! the 1715 is good but this is better!!!

it did raise rmp at shift and speed at shift (like od shifted at 45 before, now shifts to od at 50 mph).

hope this helps
Randy

 

Hi black,

As Randy mentioned, this is something you'd need to give us a call for to cover properly. I'll try to give you some help here, then you can call us for details, etc...................

A "normal" 5.4 F-150 has nothing to do with a Lightning in this and many other regards, so that isn't going to matter - they have completely different engines, transmissions and PCM calibrations that do not cross-compare like that. Also, there are some non-Lightning F-150's that have way too low shift points stock and have to be raised upwards of 800 rpm - and then a few where they don't need to be raised at all (rare). This is just one of many reasons why both Superchips and we here at Troyer Performance tune each vehicle individually, according to it's exact PCM revision, so each vehicle gets the tuning changes that are appropriate.

Just as a quick aside - I highly recommend going with our custom tuning instead of the 1715 Micro Tuner, as you'll get better power gains, a much more detailed tune and a better performance result. Now there *is* a program for a 4 PSI crank pulley in the 1715, and you could use that with your 2 PSI pulley if you like - but we advise anyone that is increasing the boost levels and/or those who want the best tuning & performance to have us do a proper custom tune.

There's no telling you exactly what the shift points are going to be or exactly how much higher they will be with whatever mechanical modifications you have done to that transmission - there are numerous different sizes of line mod valves, 3 different models of FTVB for the 4R100, etc., etc. Mechanical mods to the tranny like that alters it's fluid volume flow characteristics, which alters how quickly the tranny can fill the oncoming clutch once the PCM sends it's signal to command the shift. So the upshift points at full-throttle *might* be higher than stock, or they might not be. With a *stock* transmission, the shift points are moved up about 200 rpm or so over stock on the Lightnings, roughly - and they actually need to be even a little bit higher for best performance. With a stock torque converter in the Lightning, we don't like to see more than about 5600 rpm for a WOT 1-2 upshift point, and based on the rpm at which peak power occurs and the gear ratio spread between 1st & 2nd, that's about where it needs to be for best performance. Then the 2-3 & 3-4 (on a stock engine) should happen a tad lower, about 5400-5500 rpm.

The bottom line is, the WOT shift point depends not just on what's in the PCM program, but also on just how much power is being made by the engine (how quickly it gains rpms) and how quickly the transmission fills the oncoming clutch - the quicker it fills, the lower the WOT upshift point and the slower it fills, the higher. That's a rough generalization, but one that suits our purposes here.

Just off the cuff, I'd estimate that with the default 1715 upload and a 0.500 diameter line mod valve, your WOT upshifts will be about 150-225 rpm higher than stock.

I hope that info helps for now, & give us a call to go over this in more detail, etc.

 

thanks alot for all the help.

 

You're welcome.

To give you a rough idea, in the "standard" Superchips programs for the Lightnings in the 1715, the WOT 1-2 is usually about 5470 rpm, & the 2-3 about 5490 rpm. This is why I say the 1-2 actually needs to be a bit higher for those who want quickest full-throttle acceleration, best ET's (drag strip times), etc.

BTW, it's common to see the Lightning's tachometer actually indicate a little bit higher than actual rpms on the WOT upshifts sometimes (primarily on the 1-2, where the engine gains rpms the quickest) - but the above rpm numbers are about where they actually shift with the "standard" Superchips tunes.

Best of luck whatever you decide!