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so i just took out my microtech and put a stock s1 ecu in my s2 r33..

reconnected the afm and plumbed back the bov.

Now she won't idle. When driving boost guage shows its making boost, but it kinda bunny hops along, with spurts of mild acceleration.

any ideas?

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https://www.sau.com.au/forums/topic/263247-help-rb25-wont-idle-or-drive/
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my S1 r33 runs fine without the cat sensor, an is the stock ecu,

only times ive had probs like your sayin is when i had a crack in the cooler pipe connectors, due 2 loss of boost,

but after james mentioned it im sure ive heard that S1 an 2 ecu aren't interchangable due 2 the s1 sendin info 2 the ignitor pack, same as an S2 ecu not workin on the S1 due to the same kinda prob. also manual an auto ecu bein slightly different as well,

fixed...

resistor pack thing for the fuel pump ( in boot lhs near jack ) was unplugged and knock sensors were unpluged.. both had diff readings so i just bypassed them at the ecu using 500kohm resistors for each.

done. cept i pulled my car to peices and wasted 8 hours of my time... grrrr......

Edited by mook1

hey i had a simliar problem..but mines on and off..

hasnt done the surging thing in awhile..did it really bad lik a week ago..almost had to get towed..

but it hasnt done it eva since..cant firgure it out..

but i do get sometimes rough idles now and then..

and i clean my iacv too..

and feels lik i cant rev..esp. round the 2000-3000rpm mark..like its losing power..its weird ay..but its goes away...

i dont no if its the afm?coz i havent got a spare or no anyone wit a s2...

so i cant try that..

ive cleaned it wit crc mass air-flow cleaner..but yeah..

go new plugs..all gapped good..

and i got spitfires..

ive cahnged the 2 silicone hse..and check all clamps..doesnt feel lik a leak..or from i can tell...

the topic i started is here...

http://www.skylinesaustralia.com/forums/We...te-t262169.html

Edited by bumble_bee

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