Dr_Drift

Like Trent, I too am interested in purchasing these items through someone other than a direct retail competitior...

I've only got one spare ECU, the rest are 3 weeks away...

That exact mail order map has been used on dozens of cars with not 1 single problem... As I sugested check vac/boost leaks...

PM Sent

Traditionally all nissan tachos read high, but it sounds like you have a remapped ECU, send me a pic from inside the ECU and I'll let you know what's involved in lowering the limiter to a more sensible setting... may be as little as $50? Sam

We were running 1.6 bar and 240 rwkw for quite a few years with that engine... built Nissan Tough!

Sounds more like the screaming is a boost leak, and hence causing it to overfuel and retard the ignition by having a higher air flow voltage than it should without the boost leak, would also explain the ridiculous fuel economy that wasn't apparent before. Can check cam timing no problems, and also put back on rollers to see if we can find the source of the screeching! Call me next weekend and we'll make a time.. Sam.

No, there's plenty of fuel, no signs of pressure drop, and with the larger injectors definitely no problem... It still makes more power up top too...

Just to clarify the timing was spot on, the only reason it appeared to be incorrect was the ECU wasn't put into base timing lock mode when the other person tested it... Another workshop had wound the idle speed screw right out (high rpm) to account for some other problem (not sure why?)... So basically as the ecu wasn't locked, and achieving the desired target idle rpm was outside the scope of the factory idle speed motor, the factory ecu retards idle timing in a last ditch attempt to lower the idle... With the idle speed screw in the correct position the ecu no longer retarded the idle timing and was quite happy at 15 - exactly where it had been set prior to tune. My vote is still flow restriction! Drop the exhaust and run dual map sensors, in plenum pressure & pre cooler pressure... Have you checked the cam timing yet?

Yes Yes

Actually the 3A filter which make noticeable gains in power, combined with a good quality partition to prevent higher intake temps, it's an excellent value for money mod... If only EPA would be friendly to this AND a cooler

All 3 are available... No info on 35 yet.

There's also the factor that hitachi haven't made the single burn H8/534 processors for quite a while now.... Not sure how many are left? May be like PFCs as well soon... 27c256 Eproms are still in production, and UV erasable and retunable many times. I don't know personally what method Toshi uses though.

As above... The R33 and R34 RB25s both have very conservative ignition retard areas when air flow is increase.. Yes you can loose power, sometimes a lot...

Yes, or at least the perception of loss..

easy couple of hours... three max...

normally carry some changeovers in stock, but just waiting on new batch, should be here any day. Can also modify your actual ecu if preferred but takes a few days as I don''t have the smd work station yet. Normally looking around 2-3 hours drive in drive out for thorough tune with basic mods, obviously cam timing etc can take longer...

Yes nistune does work with a cheaper emulator than I use, which means more workshops will have the ability to tune R33s in real time very soon. Also, as the R33 eprom based boards are now available, compared to the old single burn expensive H8 style processor maps, means no additional charge for retunes on new mods etc etc on eprom boarded ecus... h8 processor replacement rather than daughter boards are still a good option for those not looking at many retunes. Sam

Not anymore Price drop!

R33 - More Flow = Retarded mid range and may well feel slower... Tune ftw!

So when's the tune lol?

Get a 28 pin dip machined socket from nearly any electronics shop for around $1, fit neatly inside factory ECU, the ZIF sockets nearly all hit on the ECU casing as they're larger... Sam Remap = Nistune: just different roads to get to the same destination...

Yep, still doing the RB's... 0425 818 755 Sam.

Thank you Geoff.