Quote from: polskifacet on May 05, 2017, 11:59:59 AM
I slept on it and have no desire to give up. If LMS is willing to lend me (maybe leading up to me buying it) a pump to see how it reacts and if the retune for it exhibits the same issue.
I don't need this solved by LMS this second, if there is a plan then I'm good and will follow up based on that plan instead of calling every day etc.
Honestly, if your fuel pressure is as bad as your logs are showing, and your considering replacing your HPFP to verify.. I would be more than happy to send you my spare to test with... free of charge.. just ship it back...
Reason is, even if you get a bigger pump, that maybe just masking the actual issue.. if you are OK with that, then cool. If you want to try the bigger pump just to see if your pump is bad, like I said, shoot me your address and you will have one to test with. Takes 5 minutes to switch out...
I agree with AJP on this one.. you have two of the better tuners for the SHO saying there is some external issue... holding LMS to the fire not only puts them in a tough spot but makes you look bad as well... given the information already provided in this thread. Tough words to hear, but not sure what resolution you are looking for? LMS clearly cannot find it and AJP cannot figure out via tuning what exactly is going on... I mean... short of replacing the entire fuel system who knows? Rails, injectors, regulators, pumps, lines...
I love my SHO, however, if I was in your shoes, and wanted a tuneable car that wasn't going to cost me an arm and leg to get to a tuneable state... I might just cut bate and get something else.. maybe taking the hit on a trade in would be cheaper than replacing parts in hopes that you might stumble across a solution?
let me know about the pump...