bbenny

hmmm have you tried moving the bleed valve all together, i know my turbosmart valve wouldnt run anything less than 1bar, they arent very good. otherwise look for a split in the actuator hose, ive seen splits that cause overboost a few times. first try removing the bleeder, if it still runs over 0.7-0.8bar replace the vacume hose and try again

well he ran that for over a year everyday without probs, although he is now running an HKS metal headgasket and forged internals, but not quite yet making 500hp i think its like 460hp or something but only running 1bar

my friend has been running around 400hp at the wheels with std headgasket on his R32 GTR

Steve your thing is just going to go mental at 1.5bar by the sound of it. what power are you expecting or hoping to achieve?

Hey mate i have one, $200.00 in very good condition, has a tiny crack about 1.5cm up on top of the bar, that fits under the blinker. I bought it as part of my project but now cant afford to paint it hehe so i need to sell it to finish the rest of my job how are those springs going?

so what would you consider "safe" for the RB20 would more than 1.2 be pushing it a little?

never heard of Jim Wolf turbos, but if you cant find anything aftermarket i have an RB20 turbo in excellent condition. im keen to move it, as its just lying around

yeah ive read that heaps of time, that putting in a metal shim style headgasket will give you better compression to run more boost. How much boost would u be able to run with metal headgasket and std internals? or even better how much in say an RB20 ?

fuel cut is a bitch! you should be able to get a bleed valve to spike at about 1bar and drop a little under without hitting fuel cut. if you have a standard turbo i wouldnt run it any higher than that anyway. if you have an aftermarket turbo i would get your ecu retuned or buy a fuel cut defender...

lets hope so steve

Dr Drift, thanks ill give you a call soon

remember that its cutting out at 5000rpm and the curve seems to be going up when it cuts. wait till i get this cut out sorted, im sure it will make very good power. well i damn hope so as ive spend a bit on it now!

Steve: you bastard! you have way more power than me wish i had Martin Donnon up here in sydney to tune mine, thats a wicked increase from mid to top! I still havent got that ecu tuned yet, ill be hoping to make 220rwkw. well done

well there is a good chance i will be getting an ebc i would like to have it on a low boost setting for everyday driving and wind it up when i feel like getting excited. Does anyone have any recomendations for an ecu tune in sydney? apart from SAS as they are booked out for some time

well i plan to run boost between 1.1 and 1.2 bar. i take it that will be out of the rb20 afm... are you saying it would then be better to get the Z32 meter or just get it tuned as is?

so is it worth while doing a swap when i get my ecu tuned? it just seems a little dodgey running out of the std airflow resolution... I wouldnt have a clue how to tune an ecu so i dont know if thats right, but does that mean the ecu will get an accurate signal if it is maxing out?

yeah mine has garrett cast into the compressor housing, then a little numberplate in the centre core with 2530 and some serial number. and HKS cast into the exaust housing.

Dont touch the settings unless you are doing it on the dyno! The SAFCII will lean it out, but it isnt 100% accurate. for example when i was tuning mine on the dyno i had a real dip in my a/f ratio at exactly 4,500rpm so i set the safc to decrease the read out at 4,500 but it actually moved the a/f ratio at around 3,500rpm. they work well but you really need to use a dyno to make sure. its really easy to get it to lean out in a particular spot unintentionally - it did that with me on the dyno, but once i worked out the variance in rpm it was easy, but what ever you do dont do it without immediate dyno runs to check.

yeah thanks for the diagram MRK25T. Yeah i think i might give your ecu a try Roy if you dont mind. if you could PM me your details that would be great thanks!

well the really wierd thing is that with std turbo i was running 1.1bar. with the 2530 it cuts out at 1bar. either its just creeping over 1.1bar and thats cut out or its just sending alot more air. i dunno. I just wanna run more booooost!!!!! I was going to get a fuel cut defender today but after reading the latest zoom article i think i want to steer away from the SAFCII and fuel cut defender. there is a great article on "sensor benders" the main problem is that by lowering afm signals the ecu will automatically advance ignition timing - and running high boost with highly advanced timing is looking for detonation. so with a tuned ecu i can get bothe a/f ratios and ignition maps tuned correctly. i figure as im aiming for 300rwhp its probably a safer move....

well i know you can run it into your ecu but need to get it tuned. And the boost cut is due to the afm sending a "maxxed out" signal to the ecu. but from what steve says maybe it cant be done without the ecu tuning...

Hey i just want some info on this conversion as ive heard mixed arguments. I have been told you can fit a Z32 AFM to a gtst to eliminate its boost cut. now i have been told this can also be done without tuning the ecu. just a matter of wiring it in. the directions for wiring it in are this: • wiring for Z32 Maf into GTS-T Z32 terminals are lettered A Thru to F, total of six terminals of which 5 are used on the Z32 and 4 on the GTS-t. Working from A upwards as follows: A: do not use B: connect to Black wire on GTS-T MAF loom C: connect to black/silver D: connect to white E: connect to black with white tracer F: do not use. Enjoy............ Can this be done with standard computer without tuning ecu? Has anyone tried it?

Joel: with the Z32 airflow meter is it possible to just slap it on without tuning the ecu? i keep getting mixed responses to this, i have a wiring diagram that shows me how to run a Z32 meter into my old afm wiring. and the instructions dont say anything about tuning computer - i dont know if it assumes someone doing this conversion will have aftermarket management or tuned ecu. When or if i get my ecu tuned, would it be worth while fitting a Z32 afm? or is it a waste?

but if i cant get that done soon i would like to take you up on your offer Roy thanks

yeah i think im going to just get my ecu remapped all together and ditch the SAFC that way i get a/f ratios and ignition timing all done as well as speed/boost cuts. then i dont have to do anything else! and hopefully get that 300rwhp im aiming for!