Stagea Cough At 4.8K

[eddie_r32]

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.

[DVS JEZ]

Did u buy cheap coilpacks?

Try a mates set of coilpacks as a test to see if it fixes it.

Also try dropping the spark plug gap down to .8mm

[eddie_r32]

nope, they are well known ones over here in uk (RSP), shall try some others in cheers

[DVS JEZ]

Which motor do u have?

[eddie_r32]

Rb25det s2

[wolverine]

What level of boost is it running? I gather it is the stock ecu?

[Race__24]

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.

[pipster11]

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

[eddie_r32]

Cheers for the replies, I have not touched the boost, I need to put the gauge in to see what the exhaust and fmic have increased it to, with regards to management I'm heading down the nistune route on a z32 ecu

[pipster11]

no deal i believe, stagea plug is different to the s1/s2 r33 one

[Race__24]

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.

[eddie_r32]

cheers, i shall go to my mappers tomorrow and smack him round the head!

[JB84]

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

[Tangles]

ah, I remember that, many moons ago now.

wire in a Apexi SAFC, dynotune, ??????, profit

[scotty nm35]

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.

[zei20l]

checked the fuel pump??