Quote from: StealBlueSho on May 20, 2018, 09:56:28 PM
Sure... you can always get more power on a dyno... or datalogging...
Brad had my meth tune cranked way the hell up there... and if the meth pump died or I had an issue in the middle of a run... the engine probably wouldn't have survived it. That was a personal risk I was willing to run.
But LMS doesn't tune that way. You won't have a dyno queen with LMS and they are not gonna tune you beyond what they deem safe for the motor and drive train....
Do I question some of there business practices.. sure... But I understand why they tune the way they do. There are plenty of SCT based tuners that have popped motors taking them beyond the limits...
Brad and Gearhead have not... but Unleashes, BCB, LET, and *** all have blown motors under their belt. Some more than others. LMS has only tanked one motor and it was a turbo issue from what I remember...
Just depends on what you want. Call LMS and talk to them. They will tell you that the meth is to offset the lack of fueling, not to gain a bunch of power. The HPFP is expensive but worth it in the long run. These cars are starved for fuel with an aggressive 93 octane tune.
Not sure what answer you are looking for... but LMS errors on the side of caution...
AND there are lots of other variables besides power output... LMS also adjust their tunes for what they see at the track in Milan and not just what the dyno says...
Edit*: Have you called and talked them? They will walk you through it. Their remote tunes are pretty dialed in for meth and the HPFP. I was told you MIGHT get 15-20 more HP from their dyno tunes... now Nitrous and bigger turbos are different they still won't tune you past around 450/450 without a motor build as they have pretty solid data showing these motors/drive train in stock form won't hold up past that...
500 is the magic number with our motor/drive train in stock form.. after that it's just a matter of time before something goes to crap. And they are not the only ones who say that...
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Just a few notes I wanted to mention but Steal blue always makes good points. I don't know how to do the multi quote thing but from the top:
Mike, I don't know if I'd say your motor wouldn't have survived if your pump ever failed...The safety nets I had in the file were never tested. Your tune could pull 10 degrees in 1 second and 15 from the knock sensors alone. And if the air fuel ratios got lean I set the spark to pull even more...I've seen plenty of tunes run north of 225kpa with NO meth.
And I don't always necesarrily push hard with meth...If someone doesn't want to then I don't...I typically ask if someone wants a more meth dependant tune or not.
I generally hate magic number values....Unfortunately engines fail when stock. So when magic number values become accepted by people then when there are engine failures people can't help themselves but to want to try and find a reason and the problem is sometimes it's the tune and sometimes there was a weak component that became exposed.
There is much less quality control on an engine like this compared to an exotic car's engine. Not all the rods, pistons are put through real time radiography so less than perfect components are most likely put through. I suspect there is only a sampling of inspection done on an engine of this cost.
I've said it before but I actually think these fuel systems are pretty strong. They just hate to be ramped on and boost spikes kill the rail pressure...Control the spikes, control the pressure
I'm always surprised to see fuel pressure issues with LMS' 93 tunes..I just don't see the boost to cause problems but it seems they have an unwillingness to adjust throttle control. And it seems they can do it because you mention that you think they use less in a meth tune.
Polski's problem was so easily remedied I don't know why they didn't just use a stock throttle control, that's all I did for him and even ran more boost than his LMS tune.
But I'm sure I have and will blow a motor. Some people request more and more against my wishes. But if that's what they want then it's different.