Fuel cut/boost cut?

Discuss topics related to the CA18DE and CA18DET series engines.
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CadetLD
Posts: 128
Joined: Sun Dec 03, 2006 8:16 pm
Car: 1991 Nissan 240sx Coupe

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So, long story not so short, I turned the boost up on my car from ~9psi to 14psi. It pulls REALY hard compared to when it was at 9psi. Love it! Anyhow, as addictive as it is, I dont want to blow it up. That said, Ive ridden in a DSM that hit boost cut after he turned the boost up and it was pretty bad. Now my car hasnt done this yet, but do I still run the risk of blowig it up(assuming everything is in well working order) or will this boost cut thing indicate too much boost before it blows? From the looks of the dyno sticky a few of you have similar setups to mine and can mabey give some advice.

Thanks in advance. Any info is much apreciated. Here is all the info and specs I can give you.

CA18DETBlitz Access ECUStock (as far as I know) injectorsStock MAFSS15 BB T-28 @14psino-name FMIC Slowboy Racing MBCBlitz Cone FilterModified SR outlet/DPMegan 3" turbo back ExhWalbro 255/ z32 filter/93oct always

Everything else Ill assume is stock or dont have yet. I also have an equal length mani and a set of DSM 440cc injectors wating to go in when I get an SAFC. If theres any info you need let me know and I can try to get it if it helps. Thanks again. -Shane


Ca_Silvia
Posts: 912
Joined: Fri Nov 18, 2005 10:06 am

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To know for sure you should install a wideband, so untill then turn down the boost. It doesn't take much to screw your motor when you blindly turn up the boost.

I think the main reason you haven't hit boost/fuel cut is your Blitz ECU proabably has removed those safety factors.

DALAZ_68
Posts: 1574
Joined: Mon Apr 09, 2007 7:01 pm
Car: 90' 240sx CA18det

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the wideband would def help you out a good amount

do u have proper fuel pressure?


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