twin tuning help needed
- Thread starter Madspeed
- Start date
Yes it is but in the beginning, he’s talking about it smoking under light throttle around town. Even if you command max rail, uS will be so low it should not drop rail pressure like WOT will. If it was, he’d be seeing an even larger drop at WOT.
In either case, the injectors could be the cause of rail pressure drop as well
Touché, sad part is at even 1100us it’s 4-5k low.
The truck, sadly, I think needs to have some experienced hands on it. There is something wrong overall. The response rate/rate of RPM increase is real low for that combo (63/480, ~100% inj, dual stock pumps, built trans w/Goerend R) that either it’s not following desired vpos (and if anyone knows the ideal curve for that charger it’s Mark) or there is a major mechanical issue.
That certainly is a possibility for the way it is dropping rail overall but I don’t think that is the “smoking gun” for his overall issues.
2x. looks like the vanes are a little tight to me in the log
Mark is tuning though so I would think with absolute certainty that isn't the issue.
i dont think this has been in marks hands yet, just remote tuning. the vanes can be light switchy so its going to take someone in the seat to dial it in. Otherwise you need a go pro recording exhaust output while you sync it straight with the log so you can see exactly when and where it starts smoking, how bad and what to tweak
The other hard part is the OP wants an unlocked tune which no tuner these days will do (and I wouldn't either). I still think the OP could benefit by slamming in a bone stock GM file (without any mods beyond MAF scaling) to see what it does. Then he can mess with his dual tank stuff from there.
None of the good ones left will support an unlocked/open file.Their out there……
Talking about the unlocked tunes, not the tuners. Mine aren’t locked, but I’m no good.
I've only sold one tune. I don't consider myself good enough either so I won't advertise or promote doing it. it was only a favor for someone who got subpar tunes from a "pro" tuner. relatively simple tune but he was happier with the way it performed. adjusted the shift ponts too. left it unlocked, nothing to hide.
not a business for me and not relaying on the income so don't care if someone gets ahold of the tune and copies it
ITS at a so called pro shop now here in american fork utah.. some "LABS" you can figure out the rest.. begging SL diesel after going 2 hour one way to help out on a truck for 3 weekends in a row and getting the pay no mind I wasent going that direction.... Injectors were sent to Gillete diesel here in utah and balanced. they flowed something like 67 % over stock..can we PLEASE put the its the injectors to bed? Its not.... =) Mark has sent well over 8 revisions each getting less and less power untill it would need get itself over a 3 inch curb... I cant get any phone time even after spending good money on parts and tuning. I give you my money you send me some locked file and Im just left to deal with it.. the truck should ROAST the tires for blocks. 456 gears on 37s dont stand a chance....
This tuner stated the tune file is whats causing the fuel pressure drop.. its because it has a cab chassis tune and they are weird he said.. worked perfectly fine when I tuned it in the stock config using starlites class room book...
I just gave the shop a deadline of wed to get it right or im pulling it out. cant tane a month to tune a fucking truck... If you know your shit.. and Im tired of all the tuners bashing each other . theyve all fixed each others tuunes blah blah blah. and none can fix this truck lol
I think 2 bosch reman cp3s will keep up..
Yes it has billet vanes. any chance you wanna lend me a hand on this? not looking for free anything..
Been there done that stock tune smokes idling down the road too and makes shit for power. about as much as Broviaks full tilt tune.
I didn't mention injectors one bit in the post you're replying to. My statement is the truck is dropping rail like a MOFO. It's not even close on rail. The truck also has an anemic rise of RPM, makes shit for boost etc.
The fact remains the truck has major mechanical issues. What those are I have no clue. Have you ensured the relief valve/plug isn't leaking at idle or as pressure increases by doing say a bottle test?
And you put in a bone stock GM pickup tune correct? If your MAF scaling is right it shouldn't smoke a ton (IE 35-40g/s at idle area) and should make somewhat OK power but not drop a pile of rail.
I understand you're frustrated and have a swap that is not common but you've gotta start with the basics. Don't step over a dollar to pick up a dime.
I am very grateful to everyone that has responded even though I act like a fucking two year old . lol
Chevy... I can logg anything you want. I cant get the truck to anyone to tune it. Nobody here in utah That I can find.. well the guy I did is stringing me along now for about a month....and hes charging me 800 for ecm only. (Mr we fix starlites tunes all the time) lol...yes I put used nozzles that were supposedly tested on used injectors. after getting so much shit from everyone around me And running across some money I bought Bosch remans..
Anyone want to HALP I can b reached @ 405 824 8367 cell.
Ken
Fuel labs 200 brushless w 5/8 feed hose to eng split into 6 or 8 to each pump. Fuel is not the issue =)
The information I provided about the vanes is about as much tuning help as I can provide without tuning it myself. If you want to haul it to Texas and leave it with me for a week or two, I'll be happy to see what I can come up with. If you aren't happy with it, I'll flash in any other file you have and not charge you anything, but I don't do remote tuning.