Hi ya'll.

I need to get hold of a good boost controller, but it needs to have an output so that I can log the boost level. I already have a logger with my wide band 02 sensor.

Any suggestions who makes something good?

logging boost level has little to do with a controller

e.g aftermarket computer usually can do this, best get one with a map sensor this way you can map rpm verse boost and see the whole thing (vs a/f ratio etc)

you could get an ebc with a max boost peak recall, or even just a defi gauge (or similar) that has a peak boost recall. but it wont tell you when it happened or for how long

Edited May 3, 200719 yr by InterCooL

the apexi el2 boost gauge with the control unit, has a boost recall. not sure for how long etc though..

If you're hooked up thru the Power FC, the FC Boost Kit must allow you to log it thru Datalogit.

That's assuming you have Powefer FC and logging software, but that's a big assumtion

Yeah I have standard ECU and a mechanical boost guage, neither of which are any good for me....unless of course I can use that map sensor that the standard boost guage uses (on the firewall).....anyone know what it outputs?

I don't just need peak recall, I need regular output to a proper logger (eg 10x a second). Required by the regs of our race category.

yeah duncan, for the logging you will need a map sensor that can input to your logger. the factory map sensor should do the job. if you want another map sensor I have one here, you can have it for free (I still owe you for some sun visors from eons ago). I bought it when I though my map sensor was dead (turns out I was wrong). I use a defi gauge which doesn't just have peak, it records. can only record 5 minutes at a time, but it's cool cause I can do a few laps with it recording, then pull into the pits and play it back and watch boost, oil pressure, oil temp and fuel pressure in real time.

as for a good boost controller the HKS EVC IV and the Blitz SBC ID III are both supposed to be very good. I use a Greddy Profec B II and it holds my boost flat as a tack, so for me it's a very good controller. and they are cheap.

here is the boost curve. it don't get much more stable than that and it brings on boost early, and hard.

yeah I wouldn't be looking to run much boost either, 12psi when racing and 16-18ish when not running under 3e regs.

speaking of the standard map sensor, it doesn't seem to go to the ECU? is it only used by the stock boost guage?

its only used for the cluster, yes

Blitz SBC ID III has an awesome logging setup i had a fittle with one in my flatmates 180 and its awesme with its datalogging capabilities

yep, it's cluster only. i've pissed mine off since running the defi gauges and never looked back

if you want this map sensor dunc, just give me a yell and I'll pop it in the mail for you to play with.

nah its cool I've got mine still installed.

Can't find any info on the voltage output of the Map sensor or its range in the manual, I guess I will need to calibrate the output against the boost guage manually. Hope it doesn't max out at 14psi or somethign.

I had a quick look at these, the "data logging" seems to be the same as the defi guages, ie the guage itself can play back what happened.

I need an output of boost level that I can run into my data logger insead

Just check the signal pin of the map sensor at ignition on - if its 2.34 volts then it only two bar which means it wont read over 15psi. I wouldn't think its over two bar though.