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Hi sorry to have one of my first posts as a help me one!

I have a series one stagea with, fmic, full exhaust (turbo back) induction kit, and the free boost mod well thast all the engine mods. I had hesitation thru the revs so fitted new uprated coil packs and sparks but now when gunning it it gets to 4.8k and coughs , in a kinda cut out way, for a second then carries on pullng like a train.

any ideas?

cheers!

oh and some stagea pics for you.

IMAG0188_zps3751ffc9.jpg

IMAG0185_zps3b7d8d3f.jpg

IMAG0176_zps57ec4a62.jpg

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https://www.sau.com.au/forums/topic/412499-stagea-cough-at-48k/
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I'm guessing you've wound up the boost on a standard computer? Anything above stock and you COULD start seeing issues. Particularly if you have a free flowing exhaust and intercooler.

Most people can usually get away with 10 to 11 psi which is all that is safe on the standard turbo anyway.

yeah another vote for edge of the tune

there is a thread in the forced induction section about this

its the ecu going into R&R around peak torque

some form of tune will fix it but its an annoying proposition for a s1 stagea

emanange is probably the best to go for

A nistune won't work. You will need to get something with a R34 type plug. There is also the issue of Nissan using 3 different ECUs on the series one. There is only ever one wiring diagram in all the manuals so you may have to trace everything yourself.

  • 5 weeks later...

My NM35 is doing the same thing - no idea on previous tuning history though, what are my best options for tuning?

Fix the problem before thinking about tuning.

Check all intake/cooler pipe clamps, clean afm, change plugs, check for cracked or perished hoses etc.

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