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R34 Stalls Then Will Is Very Hard To Start

Bratva

By Bratva,
in Engines & Forced Induction

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Bratva Community Regular

Bratva

Posted
Posted

G'day,

Car is R34 GTT Manual with nistune, been tuned and runs perfectly/idles well. The car doesnt ever stall itself but if i accidentally stall it (new clutch :P ) then when i try start it again it takes a good while to start, just splutters, black smoke comes out of the exhaust, meaning the fuel system is fine, but it doesnt start up.

I switch it on and off a few times then try to restart but it just cranks and chucks out black smoke. After a few tries it finally does start but barely but once its started there is no idle issue, or anything.

Please assist guys :)

Thanks

STATUS Grand Master

STATUS

Posted
Posted

sometimes with R34 nistune there is a bad read / write and a particular address in the ecu we cannot access to do with crank enrich gets corrupt. Take it back to the tuner, it probably just needs the factory bin relaoded and the tune imported back onto the base.

Plattsy Grand Master

Plattsy

Posted
Posted

had this issue with a subaru.

if i stalled my imoboliser would cut off the fuel so the engine would crank. but not start. after a couple of mins would have to lock and unlock the car then it would start....

not saying its your problem, but thought i would try and help!

Plattsy Grand Master

Plattsy

Posted
Posted

sometimes with R34 nistune there is a bad read / write and a particular address in the ecu we cannot access to do with crank enrich gets corrupt. Take it back to the tuner, it probably just needs the factory bin relaoded and the tune imported back onto the base.

or its this.

lol.

msports180 Mentor

msports180

Posted
Posted

sometimes with R34 nistune there is a bad read / write and a particular address in the ecu we cannot access to do with crank enrich gets corrupt. Take it back to the tuner, it probably just needs the factory bin relaoded and the tune imported back onto the base.

Had this exact b problem with mine. Tuner finished the tune on the dyno, shut the car down. Un did the straps went to start it and fuel poured out the exhaust. 45Mins later got it going again.

darkhalf Community Regular

darkhalf

Posted
Posted (edited)

Appears as it might be a Nistune issue, so its best to contact us directly about it for an immediate response and resolution. I've been alerted to this one by Trent so can fill in on this forum. Please email me directly info[at]nistune.com to follow up on this

There was a small batch of Type 4 boards back in May which we have found glitched during programming when flashing the CPLD Xilinx chips on the board.

With the S13 Type-X setup the board would not allow writing, but on ER34 setup the glitch caused intermittent ECU power up issues. It took over a month to identify the problem due to being intermittent and finding it was more than a single board affected. After this we contacted various individuals and tuners with those vehicles to reflash the CPLDs

It could be the case that this problem exists with your board. I can arrange an exchange over board if you contact me directly

sometimes with R34 nistune there is a bad read / write and a particular address in the ecu we cannot access to do with crank enrich gets corrupt. Take it back to the tuner, it probably just needs the factory bin relaoded and the tune imported back onto the base.

I have not seen this before. If you suspect this to be the case please put the board in programmer mode, and read out the board using the Base Image Programmer (Save button to create ENT). Email the ENT file here and I can compare against the matching factory tune to see which maps were changed. So far I have never seen any corruption in Type 2 - 4 boards. The only time I seen it occur is in the vector tables (startup code on the ECU) on a Type 1 board which was 'burned' into the board during tuning after the corruption occurred.

Edited by darkhalf

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