R33 Gtst Problem

[bennyfy]

Hi

I have a R33 gtst with FMIC, turbo back exhaust, boost controller, boost gauge, apexi pod installed recently.

When I adjust the boost up to 12 psi, while it's boosting up to around 10 psi, the car will popping, sounds like missing fires, but not too sure about it.

Would you guys know if there's a fuel or boost cut of R33?

I am new to skyline so please help.

If the fuel is too rich to cause those popping noise out of the exhaust, would Emanage solve that problem? or a stand alone EMS just like microtech or something.

Which series of microtech is the best for R33 Rb25det?

Thank you

Benny

[black_gtst]

Sounds like your coil packs mate,they will most likely have hairline cracks in em from being under the cover and getting hot. pull em out, wrap some fire retardent electrical tape round em n see if that helps. if so time to look at some spit fire packs!

do a search for more info, has been heaps of discussion diagnosing problems that ends up bein coil packs!~

if its not that, put it on dyno and see if its leaning out, could be fuel pump playin up.

cheerscheers!

brett

[Ryanrb25]

The microtech ltx12s is most suitable for the r33.

Try searching the forums before asking a question next time, your problem probably is caused by incorrect spark plug gap. Gap the plugs to 0.7mm with some feeler guages and it should be fine. i personally think its a safer option to run no more than 10psi through the standard turbo with standard ecu. They tend to develop a flat spot. All this information has been covered, if you want more just search.

[Birnie]

I'd agree on the spark plugs, either gap what you have or replace the ones you got with gaps already at 0.8 i think

May as well replace em while you're at it, you have to eventually anyway.

I doubt its the coils on that sort of power.

And i'd personally allow up to 12psi on the standard.

...but that's up to you, i had no probs for over a year before upgrading.

13-14 is getting dangerous, particulatly 14.

..but then again, some peeps prolly go bang on 11psi, but never heard/read of any real issues on 12psi

[gts25t4door]

I have the same mods, I upped my boost to 10psi and after a month or so I started to get the same problem. I got a cheap tested set off a fellow sau member and that fixed the problem, unfortunatly I am now getting the same problem around the 5krpm range, so if you try and change the plugs and that doesn't work then go and spend the $512 and get Splitfires from Slide.

[R31Nismoid]

Hi. Please take the time to have a search.

This is a common problem as flies in your home

Search for "+rich +retard" and you'll find dozens upon dozens of threads about increasing boost, without management.

Cheers

[toffy]

sounds like boost cut to me (or fuel cut) , put it back to standard psi, then tell us what it does