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5800Rpm fuel cut in first and second gear

MidnightPurpleR33
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MidnightPurpleR33 Newbie

MidnightPurpleR33

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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 

MidnightPurpleR33 Newbie

MidnightPurpleR33

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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. 

GTSBoy Grand Master

GTSBoy

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Posted

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!)?

 

MidnightPurpleR33 Newbie

MidnightPurpleR33

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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. 

MidnightPurpleR33 Newbie

MidnightPurpleR33

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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. 

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