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Let us know the difference from Bretts
Matt’s 2.7 Stage 4 Turbo Beast
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Wow that’s bad!!! I’ve had a few tanks like that before but not quite that bad. I’ve had -0.20 or so. My last tank sat at -0.54 for a long time. This tank is right at -0.80 amazingly. I’m definitely filling up from that same station again. Some of the best 91 I’ve ever had.
Heck yes! Wish I could ride in your truck, although I’d probably go buy a 3.5L afterwards.
I will. Brett is still working on it and I think going to push it further so we’ll see. 43.3 lb/min felt quite strong to me, so like I’ve said before, I have new respect for people like you who are running almost 60 lb/min good grief.
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3,312 Posts
For sure, I bet he will .....but really respectable for a none E Blend like 30
If I do anything next, as long as the fuel psi does not suffer on E50, which it appears not to, its aftermarket turbos
Yep. You have my vote for them!
I filled up with 5 gallons of ethanol once and got -0.96 immediately after giving it a little bit of throttle.
Who’s running meth and should I consider doing it?? I know ive been through this a handful of times…
Alright! Things are getting interesting!!!
Brett sent me a new tune (haven’t tried it yet) but the previous tune he increased the power by 20hp. Now he said he added some more boost, so we’ll see what it does.
MPT got me my 91 PR-X tune. I just went for a drive. Tried to let it learn a bit before romping on it. It pulls really hard. Boost is 18-19 psi. I did another pull with a different configuration and it did 41 lb/min, same as Brett’s other tune and Torries tunes. Except both Brett and Torrie were running 3 psi less.
My honest opinion, the PR-X tune feels good but has some kinks that need to be worked out, especially a weird screech sound on the 2nd to 3rd gearshift during the pull??!!
Brett sent me a new tune (haven’t tried it yet) but the previous tune he increased the power by 20hp. Now he said he added some more boost, so we’ll see what it does.
MPT got me my 91 PR-X tune. I just went for a drive. Tried to let it learn a bit before romping on it. It pulls really hard. Boost is 18-19 psi. I did another pull with a different configuration and it did 41 lb/min, same as Brett’s other tune and Torries tunes. Except both Brett and Torrie were running 3 psi less.
My honest opinion, the PR-X tune feels good but has some kinks that need to be worked out, especially a weird screech sound on the 2nd to 3rd gearshift during the pull??!!
It’s not tires. Sounds like it’s from the intake. I have never heard this sound before and I’d say I know the sounds my truck makes very well.
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6,655 Posts
Ima say belt.
@Boatwaco @Arkansas Eco Are you guys sure? How come I haven’t heard it before even though I’ve been on tunes that are more powerful than this one even.
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Can't be super sure.
Possible I guess. I’ll probably replace it and then see if there’s a change. Only happens on MPT tune and when I ran that tune with lb/min PID it made 41 lb/min, same as Brett’s first revision.
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4,335 Posts
I responded in the other thread where you mentioned this but I think a belt is a relatively inexpensive thing to try in a situation like this. Not that anyone's asking but, Goodyear Gatorback belts have always been a favorite of mine.
Oh no worries man! You’re welcome here anytime!
Is Motorcraft kinda, meh? In this situation? I want a belt that’s going to hold up to some powa
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