redgrandprix Posted March 20, 2014 Report Posted March 20, 2014 there is some sort of bumpfest happening... Quote
Night Fury Posted March 20, 2014 Report Posted March 20, 2014 It's unusually arousing. And I thought the limiter was 107 Quote
Go4DaMo Posted March 20, 2014 Report Posted March 20, 2014 on 3.1s? I wrapped my 90 UB3, but I don't know how accurate the speedo was, in retrospect. floored my 90 non-ub3 lumina for a solid minute from a dead stop and never felt the engine retard. do you not feel it? Quote
Night Fury Posted March 20, 2014 Report Posted March 20, 2014 Oh please, like I'd try to get my 25 year old 277k 2.8 over 85mph. I have no clue. I just THOUGHT it was 107, That's what it seems to be on a lot of early 90s stuff Quote
RobertISaar Posted March 20, 2014 Report Posted March 20, 2014 3.1 and 3100 FPR are WAY different from what i remember. same pressure(assuming you're referring to a 93-99 3100), but the design itself and location is different. Quote
Nas Escobar Posted March 20, 2014 Report Posted March 20, 2014 Why are we bumping this? Because people are using the search function and are simply adding on to threads instead of making a new "what's the difference between a 3.1mpfi and a 3100sfi?" lol Quote
Heartbeat1991 Posted March 30, 2014 Report Posted March 30, 2014 The FPR isn't even close to the same. The 3.1 in my Z24 cuts at 113. Quote
Go4DaMo Posted June 23, 2015 Report Posted June 23, 2015 Can I use early 3100 injectors in my 3.1? If so, what else would I need? I have 3 bad injectors and I've been dealing with 3.1 injector issues since high school. Want to get this car together...thanks! Quote
Go4DaMo Posted June 23, 2015 Report Posted June 23, 2015 Iirc, the newer injectors yield 4% more fuel, which can be fixed if so desired by tuning it. Otherwise, it's nearly unnoticeable. I just want to know if any other parts need swapped...for example, the rail... Quote
RobertISaar Posted June 23, 2015 Report Posted June 23, 2015 they flow a bit more, they're rated for roughly 17.5 lb/hr. if the 3.1 injectors are the 16.7 that GM implies in the calibration, that's 4.8% difference. ideally, keeping it under 5% would be good, but even 10% would be acceptable if everything else is how it should be. the stock calibration will allow the long-term trim to remove up to 18.5% of the calculated fuel mass, so even 10% would give you a good range to work with. Quote
Go4DaMo Posted June 25, 2015 Report Posted June 25, 2015 You are just the man I was going to run this past at the meet Quote
Nas Escobar Posted June 26, 2015 Report Posted June 26, 2015 Not once.... BUT TWICE?!?!?!?!?!!??!??? Quote
RobertISaar Posted June 26, 2015 Report Posted June 26, 2015 to Sam, last post dates are just a number. Quote
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