CM2250 Poor fuel mileage

[730Industries]

(02-14-2022 )Rawze Wrote:  

(02-13-2022 )730Industries Wrote:  [align=left]I have the exact same issues with my boost minus the awful fuel mileage. My dash matches doing fuel consumption by hand. but my boost holds hard at 30 up to 1500ish rpms and then drops to 22 or so by the time i hit 1800 rpms....

according to your other thread here, you have a CM2350...
ref: http://rawze.com/forums/showthread.php?t...7#pid69687

just an FYI: max boost allowed for ...

CM870,CM871 = 38-39 PSI max with higher HP tunes(500+ hp), and 37~ish psi max for mid-tier power ranges (below 500 hp). 39 is the upper extreme limit.

CM2250's = 34-36 PSI max no matter what HP your trying to make. 36 is the upper extreme limit.

CM2350's = 33~ish PSI max for mid-tier power levels and 33-34 psi max for high hp. 34 is the absolute upper extreme limit on this engine.

X15's = 28-30~ish PSI max for mid-tier power levels and 30-32 psi max for high hp. 32 is the absolute upper extreme limit on this engine.

Not sure where i said it was a 2350, but it is definitely a 2250. Should i ask RR to look and anything specific when i talk to him again? I'm obviously completely out of my league when it comes to tuning questions. I just have my observations for driving it for 2 weeks since all the changes.