Can I test drive with 550cc injectors and factory tune?
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Joined: Jan 2010
Posts: 183
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From: NY
2005 E55 AMG, 2017 E400 Wagon, 2018 C350e hybrid
Can I test drive with 550cc injectors and factory tune?
I'm trying to rule out my tune as the source of a problem so I would like to reflash my stock file and test drive it that way (should only take 1-2 miles in gears 1-3 with gentle throttle). I don't plan on getting into boost at all, so I should be fine with the rest of the mods, but I'm worried about the injectors. I know I can't run 550cc injectors without a tune for any significant amount of time, but is there enough range in the fuel trim that it will compensate or will it go into limp mode and wash down the cylinders?
Thanks in advance!
Thanks in advance!
MBWorld Fanatic!
Joined: Jul 2014
Posts: 3,323
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2005 e55 AMG
You can, I have done it. But remember every car is different ! With that being said ,the O-2 sensors will keep the AFR in check during normal driving but.... In boost ...nooooooo !
Last edited by SICAMG; Aug 29, 2018 at 08:45 AM.
MBWorld Fanatic!
Joined: Jul 2014
Posts: 3,323
Likes: 583
2005 e55 AMG
SMed08 is probably more accurate than me because I forgot that I also have an adjustable regulator that runs at around 60psi....much lower that factory stock fuel pressures so that will make a difference as well.
