Help me with my r33 gtst

[Guest Slide]

Somebody help me!!!!!!!!!!!!!!!!

I have taken my R33 to a number of stupid so called specialists and they have all given me different answers which have cost me nearly $2000.

On standard boost (7psi) it runs like new ,Anything over (i mean even 1 psi over) it pops not detonates. it sounds like it is backfiring.

it looses boost and it sounds like it is just feeding it out the exhaust. verrrry embarassing.

sound like it is farting. I am using a turbosmart dual stage boost controller (tried a different 1 already) 750hp fuel pump, ngk irridium plugs,fuel lines, injectors have been cleaned ,3'' turbo back exhaust, pod filter ect. I have tried tripping the computer did not fix.

Help Help Help (eeeger to run more boooost) i feel like popeye without spinach

[sewid]

Sounds like boost cut to me.

How are you measuring boost? Boost cut happens at about 10psi or a bit over. The symptoms match pretty much exactly what you described.

You could get a boost cut defender but you're better off getting a full ECU replacement.

[Nozila]

but isnt boost cutting in at 7psi strange.

[Guest RedLineGTR]

  Quote

ngk irridium plugs

What are they gapped at??

[Guest Slide]

anything after 7psi confussed everyone i sent my car to

people have said to me the following with reports.

1:change computer

2:change bov(i am still using factory plum back)

3:change boost actuator

4:change plugs (so i did)

5:fuel pump (so i did)

6:have injectors cleaned(they were left to recirculate for 13 hours)

have tried using tape over the coil packs to avoid shorts from faulty coil packs.

i have taken it to 2 places where i have said i am not paying unless it is fixed came back and they both said cant help you.

Someone please give me an answer.

I am a Gold Coast local.

Anyone know anything

If someone knows a servicer around my area please post

[Guest Slide]

I have an apexi el bar boost guage.

[benm]

Reset the Std ECU ?

[Guest Robo's]

Have you had it dynoed and checked your A/F ratios?? I bet its overfueling and blowing out your spark. It happened to me once i started to put some boost in it

[DentonR33]

What is your Spark Plug GAP?? Should be 0.70-.8mm my iridiums were 1.1 gap standard which resulted in the same symptoms as you when running more than 7psi..

[Guest Slide]

I have reset the standard ecu at least 10 times to see if new changes would work.

they are gapped at 0.75/0.80 to close to define exactly

The computer has been reflashed with factory program so the computer will handle upto 15psi boost without remapping.

[exXU1]

I had problems with the Iridiums continually, now use NGk 3330 BCPR7ES gapped @ 0.65mm 413 hp atw 17 lbs, try it if you havent already!

[nsta]

funny, i always thought my car was spiking, but the symtops you show are exactly what im experiencing???, so its missing big time.

Im havnig the exact same problem mate!, anything over stock 7psi (or 1/2 way on the stock gauge), will start missing, feels like 100 times a second, and yes fartings a good word:)

just wondering if you've overcome the issue yet? do i really need a safc???

[SECURITY]

could be your coils too.

theres a sticky in this section on how to fix them.

[NickR33]

I think Robo is onto something... you need to get it dynoed and post up the A/F ratios etc... my bet would be its just running extremely rich and blowing out your spark... remember the closer you gap your plugs the weaker the spark gets (may help you fix the problem in the short term tho)

other than that if you reckon it is losing boost could you just have a boost leak somewhere that only become apparent when you go over 7psi?

[nsta]

boost leak, so basically a hose letting off a leak, maybe a bad hose connected to the tap, what hoses do you reccomend

[benl1981]

Find a mate with a PFC - plug it in and run the base map. I had probs around 9psi hich I thought was coils but turned out to be the standard ECU going into Rich and retard mode.

PFC connected instead - no probs