Manolis_D

iTrader: (2)

Hey!,
I can't seem to get the haltech to control the stock TII boost control solenoid properly. I have the period at ~30, and the PWM output is wired directly to the solenoid, but even with the map values all on 95% the solenoid remains off.

Am I missing something? I thought that it might have been the 'trim control', so i jumpered that, but it made no difference.

This is really driving me up the wall! I just leaned out the car (TII w/ a 60-1, etc. etc.) a bit and the boost dropped to 7 lbs (doh!). It looks like leaning it out helped the wastegate regulate things.

Any advice would be greatly appreciated -- I really don't want to have to purchase an aftermarket controller

Thanks!,
Manolis

Node

iTrader: (1)

You leaned it out to help a boost control problem? That doesn't sound healthy.
Try posting this in the Haltech Forum which is located inside the ECU Forum.
Good Luck!

rxrotary2_7

unfortunatly the haltech boost control sucks from what i know. try a manual boost controller.

vosko

iTrader: (4)

the haltech can control boost OK. why are you using the stock mazda boost control solenoid its garbage! if your gonna do it find a much better wastegate solenoid to use or use a manual boost controller or a proven EBC , eg profec b, blitz sbc-id, profec e-01 etc.... you didn't lean out the fuel did you ? be very careful we don't want you blowing up your baby!

82streetracer

iTrader: (1)

I plan on using the haltech controller when I my setup is up and running. It should help alot with responce.

I have been playing with the haltech program. Why doesnt it control boost based on MAP. Why is it a %

vosko

iTrader: (4)

the % is the duty cycle of the wastegate. its basically how fast it responds to open or close the wastegate....

Manolis_D

iTrader: (2)

Node: No, I leaned it out because it is running so rich that 1). The Wideband is PEGGED on 10:1 and 2). It is misfiring above 6krpm and there is a very strong gasoline smell from the wastegate dump tube (open, right under my feet )

Vosko: Is there a solenoid other than the stock Mazda one that you recommend for the Haltech Boost control? As I mentioned above, the thing is running like 8 or 9:1 AFR above 6K, and about 10-10.5:1 at 5k or so Plenty of fuel, and i'm taking it out about 2-3% at a time. Do you have any recommendations on a decent EBC (preferably one I can find used, i'm 18 and in high school, and make about 50 bucks a week )

Thanks!
Manolis

vosko

iTrader: (4)

just get a bleed valve from home depot for $5

that's what FD's use

Manolis_D

iTrader: (2)

heh, OK, i think i've got something similar on there right now. Do you T that Bleed valve into the wastegate line, or put it directly in line with the wastegate? (I have a bleed valve T'ed into the wastegate line as of this afternoon, but I was wondering if putting the bleed valve inline with the wastegate and then closing it slowly <as opposed to opening the T'd in valve slowly> would work better?)

I managed to hit 13psi today with the bleed valve in there, but it'd be nice to have a 'better' boost curve. I've been leaning it out 2-3% at a time all day long, and It's finally stopped misfiring

Thanks,
Manolis

vosko

iTrader: (4)

you have to try it and find out.... i don't remember how i had them on my FD. personally i am using a blitz sbc-id. that thing is rock solid at whatever boost i set it to. it amazes me when i see 10psi rock solid in every gear with my T78 lol