JLee's 1991 Toyota MR2 Turbo build thread

[JCH13]

VE Analyze Live is such a cool program...

 

[jlee]

VE Analyze Live is such a cool program...

It's worth so much more than $49.95..heh.

 

[exdeath]

Looks conservative on the spark map. WOT advance only 14 deg? is that total or + 10 base mechanical?

For reference I'm running about 22 deg total advance with 8.5:1 17 psi 11.7-ish AFR on 91 octane.

 

[jlee]

Looks conservative on the spark map. WOT advance only 14 deg? is that total or + 10 base mechanical?

For reference I'm running about 22 deg total advance with 8.5:1 17 psi 11.7-ish AFR on 91 octane.

It's very conservative. I'm going to get AFRs dialed in before I start playing with timing.

 

[FuzzyDunlop]

dude. this looks VERY tempting right now. Its so cool, and looks not too difficult.
Do want, and am [---this---] close to pushing the button and purchasing - just trying to justify it.
Especially because Id probably be the first Mk1.5 with it.
Gah, its just so cool.

 

[jlee]

I've been told lean above ~4k rpm off boost isn't good for EGT's, so I made some changes.

I need to add fuel to the bottom of the VE table; it's auto-tuning decel off throttle, pulling a LOT of fuel. That's fine off throttle, but if I free rev it's running very lean. I'm going to add fuel back in down there, and then set the car to cut fuel on decel entirely.

 

[JCH13]

I've been bugging JLee to get a Megasquirt literally since the day I met him... about damn time!

 

[jlee]

Mine was preordered and shipped on release day, and I believe I have the first one running on MSPNP aside from the test car. So, pfft.

 

[JCH13]

Mine was preordered and shipped on release day, and I believe I have the first one running on MSPNP aside from the test car. So, pfft.

I had an MS2 with beta firmware on an FSAE engine :awe:

Though the PNP option is way more better than hacking up a factory wiring harness :thumbsup:

 

[jlee]

Boost control is fixed. Now to dial in the boost table.

 

[jlee]

Coolant temp went up to 219f the other day, so I bled my cooling system..went out and flogged the piss out of the car today (104f ambient temp) and it held beautifully.

I'm still getting boost drop after a few back-to-back pulls; got on it a few times in second, and the 3rd/4th consecutive time I wasn't making much boost at all. I need to datalog that a few more times and see if AIT is going way up or what....but I need to fix this before I can race - I'll lose power by third gear.

Here's today!

 

[FuzzyDunlop]

How many of those miles have you put on yourself? And whos the other cars?

 

[jlee]

I got it at 236k, I think. One is a local guy with a Gen3 and another from the Midwest with a 1mzfe v6.

 

[jlee]

:whiste:

 

[exdeath]

Slippery slope much?

 

[jlee]

hush.

:sneaky:

 

[FuzzyDunlop]

oh my cow.
wringing fingers in anticipation.

Hey question for ya. Does the MSPNP eliminate the need for a Boost controller? ATSAaron has a HKS unit I might snap up if its still available and he lowers his price a bit more.

 

[jlee]

MSPNP can do both open loop and closed loop boost control with a $45 solenoid. That's what I'm using.

 

[JCH13]

:awe:

I <3 Megasquirt so hard.

 

[jlee]

Blew the air intake temp sensor out of the cold pipe today - car is also overheating after long (~1hr+) drives when I sustain low speeds. It'll cool right down to ~183 on the highway, up to 240f at a stop. It'll drop down while stopped if I rev the engine - going to pull the radiator and see if there's any crap in it, check fins/etc.

I'll probably do a quick compression test too, just for kicks..but I don't seem to be losing coolant, I have no oil in my coolant nor coolant in my oil, so I'm hoping it's fine.

 

[HarryLui]

Is the fan working full speed?

 

[jlee]

I unplugged the temp sensor so the fan runs 100%. I'm going to pull the radiator and flush it - I haven't flushed coolant completely since I bought the car, and I'm thinking it might be the original (258k) radiator.

Edit: Radiator is in great shape. Hrm. Maybe new coolant, new thermostat, bleed & try again.

 

[jlee]

Still waiting for the GT3071 to arrive - emailed ATS for an update. I might install my braided stainless brake lines while it's up on jackstands.

 

[FuzzyDunlop]

I find Ats slow at getting things shipped. the second time I tried to order from them I waited four days for any word from them. after not hearing anything I called and canceled my order - took three calls to get someone on the phone. Scott said it wasn't even processed yet. guess selling small/ single items isn't a priority for them? or maybe they are just overwhelmed.

 

[jlee]

I find Ats slow at getting things shipped. the second time I tried to order from them I waited four days for any word from them. after not hearing anything I called and canceled my order - took three calls to get someone on the phone. Scott said it wasn't even processed yet. guess selling small/ single items isn't a priority for them? or maybe they are just overwhelmed.

I would hope they'd get a $2400 order out sooner than later, but maybe not...I'll give them a call later today if I don't get an email back.

Had I known I was going to pick up the V6 car, I'd have stuck with my old turbo - but ahwell...we can't all be fortune-tellers, right?

Edit: OK, my error. They did send me a shipment notification last week - I just didn't notice who it was from (have had kind of a lot of those lately..). It's here now. :awe: