MidnightPurpleR33 Posted February 9, 2021 Share Posted February 9, 2021 Hey guys, Just got myself a '93 R33 GTST and gave it a bit in first and second and noticed there was a fuel cut at about 5800rpm. The owner claims that it was dyno tuned this way to prevent the motor blowing up. Was wondering if anyone has ever heard of this or was this just a tune that maxes it's injectors duty cycle at this rpm. Only does it in first and second gear, the rest are fine. Cheers Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/ Share on other sites More sharing options...
GTSBoy Posted February 9, 2021 Share Posted February 9, 2021 Sigh. What ECU? Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947117 Share on other sites More sharing options...
MidnightPurpleR33 Posted February 9, 2021 Author Share Posted February 9, 2021 (edited) 6 minutes ago, GTSBoy said: Sigh. What ECU? Minze ECU Edited February 9, 2021 by MidnightPurpleR33 Spelling error Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947118 Share on other sites More sharing options...
GTSBoy Posted February 9, 2021 Share Posted February 9, 2021 f**k it off. Get a proper ECU. But even with that advice, the problem could be coming from a sensor. We can't fault find this sort of crap across the 'net very easily. Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947120 Share on other sites More sharing options...
MidnightPurpleR33 Posted February 9, 2021 Author Share Posted February 9, 2021 1 minute ago, GTSBoy said: f**k it off. Get a proper ECU. But even with that advice, the problem could be coming from a sensor. We can't fault find this sort of crap across the 'net very easily. Righto. Was asking if it was a common thing tuners added in - not a solution as to how to fix it. Cheers. Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947121 Share on other sites More sharing options...
GTSBoy Posted February 9, 2021 Share Posted February 9, 2021 Mines ECUs are just a remap into an EEPROM in a factory ECU. They are not "tuneable". They come with the Mines tune in them, and that's it. And the tune is shit. And they are a bad idea. And how would we know if their stupidity included fuel or ignition cuts at 5800rpm in 1st and 2nd only (remembering that it is actually impossible to implement "per gear" cuts like that on factory Nissan ECUs, as they do not know what gear they're in anyway!)? Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947123 Share on other sites More sharing options...
MidnightPurpleR33 Posted February 9, 2021 Author Share Posted February 9, 2021 2 minutes ago, GTSBoy said: Mines ECUs are just a remap into an EEPROM in a factory ECU. They are not "tuneable". They come with the Mines tune in them, and that's it. And the tune is shit. And they are a bad idea. And how would we know if their stupidity included fuel or ignition cuts at 5800rpm in 1st and 2nd only (remembering that it is actually impossible to implement "per gear" cuts like that on factory Nissan ECUs, as they do not know what gear they're in anyway!)? Good to know. I'll look at getting a new ECU at some time in the future. Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947124 Share on other sites More sharing options...
Ben C34 Posted February 9, 2021 Share Posted February 9, 2021 Also could be tacho not being accurate, but a mines ecu is a bin job regardless Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947132 Share on other sites More sharing options...
MidnightPurpleR33 Posted February 10, 2021 Author Share Posted February 10, 2021 On 09/02/2021 at 6:24 PM, Ben C34 said: Also could be tacho not being accurate, but a mines ecu is a bin job regardless Yeah, I only just got the car last week - new ECU is probably high on the list of new things to get. Cheers mate. Link to comment https://www.sau.com.au/forums/topic/481932-5800rpm-fuel-cut-in-first-and-second-gear/#findComment-7947215 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now