M54. Let the foolishness begin.

[bender]

dude that is so sick. you made some serious progress in a very short period of time, congrats!

we need some videos!

[hoveringuy]

Dumbass!

Yeah, that's me.

Took it for a good 25 mile drive this morning and everything is working GREAT, except the $#@* temp gauge.

I start trouble-shooting the wiring and get down to the ground path.

Hello! It's a plastic fitting! Not a good conductor!

I created a ground to the plug and now the temp guage works perfectly.

I think I'll leave the zip tie like that, it goes well with driving around with the hood off.

[lifeiskaos]

lol nice

[WillisE30]

Steve, I thought you were crazy when I read the initial post, then I met you and we tried your signal converter on my car and I knew you were nuts. BRAVO!!!

[I got it, yes!!]

Congrats, Ill have to come take a look at it some day soon.

[MR 325]

Congrats man, that's badass.

[SpecM]

that is so cool

you are my hero

[hoveringuy]

Disa

I've been getting more and more details squared-away. I had the heater hoses backwards so I reversed them and now I have cabin heat. The manifold is actually small enough to allow clearance for that!

Anyway, I got my RPM activated switch from Summit today and installed it. As background, the DISA valve is a vacuum actuated, electrically activated valve that changes the intake from a low speed optimum setting where resonance packs more air in the cylinders to a high speed setting where it opens up and breaths. It switches at around 3800rpm.

I've tried it in both positions, but now that the switch is installed it pulls down low and screams up high.

DISA, it's the shizzle!

Off to the dyno...

[jahnaboi]

Dude... could you do my wiring!? LOL. I'm struggling enough just trying to convert my stupid s52 to obd1 considering I don't know where any connections go or how everything is suppoes to mount and what I'm missing because I never had a complete obd1 motor (s/m50) to compare it to what I'm doing as of the moment.

[2002maniac]

Congratulations Hoveringuy!

[hoveringuy]

Dyno time

Dynojet. Stock e30 exhaust. DISA switches at 3800 rpm.

I'm making close to max torque at 1800rpm?

Who can read the graph and tell me when VANOS switches off. ha ha.

[matt]

You're very lean, maybe dangerously so. Are you certain the wideband was calibrated properly? Could something else have thrown it off?

[325Projectz]

I learned in the process that the M50 power steering pump IS NOT compatible with the M54. The pulley ends up being offset by about 5/8". I need to order an M54 power steering pump ASAP.

have a picture of this?

i had a similar problem on my frankenstein s52 with a m54 oil filter housing. i had the m50 power steering pump bracket machined on the back side and now it works perfect. i also tried the m54 power steering pump, and i had more troubles with that. let me know if you a m54 pump.

[hoveringuy]

You're very lean, maybe dangerously so. Are you certain the wideband was calibrated properly? Could something else have thrown it off?

I think the wideband was accurate. It showed good richening at tip in and later he did some driveability checks and the A/F was more normal, although tending to lean.

I'm using the Dinan S50 chip. I don't know if the cam profile is causing it to go lean or the 8 extra degrees of VANOS advance. Fuel pressure is around 55 PSI. Should I bump up the pressure?

I think this was a good effort for a baseline pull. I need a better exhaust (the stuffing blew out after the first run. It was pretty funny!), I need to get my dual VANOS controller on track, and I need TRM to develop some pimpin' software for this. My goal is 220 wheel hp.

[SpecM]

I say more fuel pressure is in order
but the real culprit is the cam profiles, imo