Rb20 Fuel Cut

[BANGN]

Do R32 GTST's have a boost fuel cut? My car did it twice this morning but it wont do it any more, I got to servo and found the positive termal wire was loose and i had to move it to get my car to start.

[kila32]

Do R32 GTST's have a boost fuel cut? My car did it twice this morning but it wont do it any more, I got to servo and found the positive termal wire was loose and i had to move it to get my car to start.

na i odnt think so im running 12 psi on my car with just boltons and never had it cut out

[CEF11E]

RB20 ecu's have a mass airflow sensing cut that cuts injector pulse as soon as the AFM reads a given voltage depending on the air flow/rpm range.

typically even with an RB25 turbo it will not hit this unless it is a really cold day. You can have the ecu remapped to fix this and also customise your fuel and timing maps to suit your needs.

[Cubes]

Mine used to hit it running around 15-16psi on the standard r32 turbo on an icy night or morning. :S

Generally up at around 5000rpm.

I then bolted the rb30det in with the stock ecu and it would hit the fuel cut around 6psi at ~3500rpm with the stock rb20det turbo.

[BANGN]

well it aint done it since and i just upped the boost, i was only on factory 33 actuator boost levels.. I just poped it up to 14 and its still fine.. ALLTHO my battery lost a cell 2 days later so im thinkn must of been a power issue

[boostin_r33]

yeah its usually after 15 by then u usually change your computer anyways!

[GTR-Ben]

I have experienced the cut at 5000 rpm or so in 5th, speed cut removed but it use to always cut for a few seconds when doing a timed flying quater.. was quite annoying.