Need Help! R33 Gts-T With 90Kw

[famous33]

I have an auto 93 r33 GTS-t and it is only making 90kw on the dyno ...

it has no power down low, or even thru the middle rev range, BUT i can feel it hit boost around about 5,000rpm ..

the only mods that are on it are:

* HKS Superdragger exhaust

* Turbosmart BOV

* Turbosmart boost controller

even before any of the above mods were made it still ran like shit, and my mate had it on his dyno today and it has only made a top of 90kw, he had thought that the cat may have collapsed but that isnt the case .. he has told me that r33's havent got the best standard ECU, BUT some are quite good and others are shitty its just the luck of the draw ..

what could be the problem?? he is flat out with work and unfortunately didnt have the time today to go over it all ..

any help would be greatly appreciated!!!!!!!

[Super Drager]

Get him to check your Ignition timing, i've seen a few R33's with the CAS wound completely out. Also Boost leak test it.

[R31Nismoid]

Factory boost level?

If so you'd only expect around 140rwkw or so, and the auto will suck about 10k off that. So a problem yes - most likely as stated around the timing of the CAS, or the actual cam belt being off a tooth as well causing issues (also common).

[famous33]

Thanks for the feedback guys, my mate had done a smoke test and it had come up clear so we will check the timing asap, but its no longer running stock boost level, he set it at around 9psi I think

[Adriano]

What AFR's was it running, could be fuel pump

[famous33]

I have no idea, but the fuel pump has seemed fine and it only seems to lack power thru the mid rev range and up to about 5000rpm ..

[t_revz]

Check VCT is working too

[SiR_RB]

swap over ecu for a known working one?

[famous33]

That's what I would like to try, so if anyone in Newcastle or the Central Coast has a known working ECU and would let me try it out it would be much appreciated and I can get a carton of beer or whatever for their time and help!!!

[rbs30]

Where abouts in newy are you?

[famous33]

Just at wallsend pal

[rbs30]

I've got a stock ecu but depends how long you need it for. Could have it for a few hours tomorrow arvo while I'm at work in cardiff or its coming out permanently on the weekend to make way for the haltech.

[famous33]

If it suits you more pal I'd be more than happy to wait till the weekend until its out permanently, how's that sound for you? Where are you from, I could come pick it up and try it out at your place

[rbs30]

Yeah that's easier. I live in town. Pm me your number and ill send you a message when you can come and grab it.

[Moodles2]

Check the exhaust wheel on the turbo, might be missing entire blades on the ceramic wheel.

[HR32GTS 4DOOR]

I have an auto 93 r33 GTS-t and it is only making 90kw on the dyno ...

it has no power down low, or even thru the middle rev range, BUT i can feel it hit boost around about 5,000rpm ..

the only mods that are on it are:

* HKS Superdragger exhaust

* Turbosmart BOV

* Turbosmart boost controller

even before any of the above mods were made it still ran like shit, and my mate had it on his dyno today and it has only made a top of 90kw, he had thought that the cat may have collapsed but that isnt the case .. he has told me that r33's havent got the best standard ECU, BUT some are quite good and others are shitty its just the luck of the draw ..

what could be the problem?? he is flat out with work and unfortunately didnt have the time today to go over it all ..

any help would be greatly appreciated!!!!!!!

THIS is the EXACT same problem I am having after my engine swap. shitty power down low, makes boost fine but no pull untill 5000rpm

Checked everything I could by myself, Cam timing exhaust restriction boost/vacuum leaks etc. Also If you put a timing light on it can you actually get a reading, mine just jumps around.

I noticed the other day that my injectors are not the standard purple colour they are red, so im guessing thats my issue and a long shot but could be yours???

[Crazyduck]

I've only ever seen this problem in marine and I'm not sure what spark plugs are required in rb's but I've seen a mercury 75hp have crazy issues and jump around on the timing light because the resistor in one of the spark plugs failed.

[famous33]

ok well i tried a new ECU this afternoon and no difference, so i will be moving onto trying a new AFM ..

if anyone around the newcastle/central coast region has a spare afm for a series 1 33 that i could borrow it would be much appreciated !!

[rbs30]

Lol. Swap you the ecu for an afm tomorrow dude.

[famous33]

hahah your a legend thanks pal, you working the same hours??