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Old 02-12-2015, 05:49 PM   #1
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Default Injector cut at 7psi.. please help

Hoping someone can help me out here, just got my miata up and running with a pieced together turbo kit and I'm running into an issue.

the car starts to pull great and then it hits 7 psi and jerks for a second and falls in rpms. At first I thought it was spark blow out so i gapped my plugs smaller and tried again and no luck. I looked over my logs and my injectors go to 0% duty at 7psi and stay at zero until it falls to about 5 psi.

Hoping someone maybe has some input on what could be cause my injectors to die out only at that specific load. I'll link the log as well thank you!!

Injectors are 420cc rx8
t25/28 hybrid from begi
running on ms2pnp
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File Type: msl 1pull.msl (225.3 KB, 39 views)
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Old 02-12-2015, 05:56 PM   #2
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Perhaps you have boost cut set at ~7psi?
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Old 02-12-2015, 06:31 PM   #3
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Perhaps you have boost cut set at ~7psi?
you can only set boost cut if your using megasquirt to control boost right? i"m running a mbc should have mentioned that. and my waste gate is set at 10psi.

I'm thinking it may be a boost leak just not sure if that would cause my fuel to go like that.
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Old 02-12-2015, 07:30 PM   #4
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Overboost protection.

Check it out.
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Old 02-12-2015, 07:53 PM   #5
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Quote:
Injector cut at 7psi
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Originally Posted by Bmxicanjohn View Post
you can only set boost cut if your using megasquirt to control boost right? i"m running a mbc should have mentioned that. and my waste gate is set at 10psi.

I'm thinking it may be a boost leak just not sure if that would cause my fuel to go like that.
lol found your problem
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Old 02-12-2015, 08:12 PM   #6
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lol found your problem
heck man as soon I can figure out why my injector is going dead i'm turning the boost all the way up haha. I'm gonna change my name to 40psi
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Old 02-12-2015, 08:15 PM   #7
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Overboost protection.

Check it out.
Erat!!! I think you solved my issue! I'm an idiot for over looking that. Brb gonna throw 30 layers on and go for a test drive. (gotta love pittsburgh weather)
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Old 02-12-2015, 08:17 PM   #8
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Overboost protection, commonly called "boost cut" on the streetz.
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Old 02-12-2015, 08:27 PM   #9
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Originally Posted by Full_Tilt_Boogie View Post
Overboost protection, commonly called "boost cut" on the streetz.
Only for those to scurrred to run ALLOFIT.
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Old 02-12-2015, 08:56 PM   #10
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Only for those to scurrred to run ALLOFIT.
well I just ran all of it!!! and i"m still smiling. Thank you for the fix!!
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