A NB8B Turbo progress.

IanR · Postby **IanR** » Sun May 17, 2015 3:11 pm

Had a spare rocker cover, so it was acid dipped and primed.

4 coats of gloss black, and a sand.

Then 3 coats of clear... ready to oven bake when dry... and the household are away :wink:

Came up ok, except for a few insects showed up right at the final coat of clear...

IanR · Postby **IanR** » Sun May 31, 2015 11:05 am

Time to swap the rocker cover and install the id725 injectors, plus give the throttle body and good clean out.

Here is where it started.

These stunning little trinkets...

Replace these..

Then clean this..."yes I did the washing up honey"

Take this off...

All back together...

Recalibration for new injectors in the Megasquirt MS3 ecu was done simply by changing values for dead time and flow rates, all done through tuner studio on the laptop.

IanR · Postby **IanR** » Sun May 31, 2015 11:43 am

Loving the megasquirt today, with the new injectors in knew I would have to re-tune idle settings, so plug in the laptop and set it to autotune the warm up enrichment for the idle... firstly the car started first go but stalled shortly after then it started and auto corrected right up to full operating temp. Very cool. Now to drive the car and let the ecu correct the VE (volumetric efficiency) table.

Next step... add gt2860rs and build up a full TBE...then off to NitroDann for the Official Release of the horses, this next process will take the whole weekend in a month or so.

speed · Postby **speed** » Wed Jun 03, 2015 10:06 am

Looking good! Especially liked the dishes comment haha

IanR · Postby **IanR** » Wed Jun 03, 2015 11:05 am

speed wrote:Looking good! Especially liked the dishes comment haha

Thanks speed, geez it winds up some female friends I have... they are shocked!

Lokiel · Postby **Lokiel** » Wed Jun 03, 2015 2:28 pm

IanR wrote:
speed wrote:Looking good! Especially liked the dishes comment haha

Thanks speed, geez it winds up some female friends I have... they are shocked!

I bake my wrinkle black/red items in the oven - only because I have no-one to answer to

speed · Postby **speed** » Wed Jun 03, 2015 6:44 pm

Lokiel wrote:
IanR wrote:
speed wrote:Looking good! Especially liked the dishes comment haha

Thanks speed, geez it winds up some female friends I have... they are shocked!

I bake my wrinkle black/red items in the oven - only because I have no-one to answer to

Pretty sure that would be instant death in my household.

IanR · Postby **IanR** » Wed Jun 03, 2015 10:15 pm

speed wrote:
Lokiel wrote:
IanR wrote:
speed wrote:Looking good! Especially liked the dishes comment haha

Thanks speed, geez it winds up some female friends I have... they are shocked!

I bake my wrinkle black/red items in the oven - only because I have no-one to answer to

Pretty sure that would be instant death in my household.

I burnt some bacon to a cinder afterwards as incense to cover the smell of hot oil...

IanR · Postby **IanR** » Thu Jun 04, 2015 9:41 am

Back from the panel shop this morning, front and rear bars sanded back and re sprayed, threw some clear indicators on too.

IanR · Postby **IanR** » Sun Jun 07, 2015 8:09 pm

If you hadn't picked up on it the car runs megasquirt 3 basic pnp ecu...it came with the car and when I bought the car idle and warm up was very basic and un-tuned using only a very basic "open loop" setup.

It would idle at about 700 when cold and easily stall when there was a volt drop from the power windows...Dan only had it for a day or so when it was getting a dyno tune and he swapped it to "closed loop idle", which includes the complex PID system which has approximately a "thousand options..." in order to keep the idle at a preset rpm independent of external factors such as temperature, voltage, etc etc etc in contrast to open loop which sets up at idle on a relatively basic function of coolant temperature.

BUT...

I was stalling all the time coasting to a stop with clutch in, and nothing I could do in tuner studio could do anything but make it worse. I seemed to be chasing my tail with idle dropping out, screaming high, and getting possessed so that id have to pull over and restart the car to get it from some crazy oscillation that would bounce of the fuel cut...I gave up after a couple of weeks and have gone back to oped loop and now have super stable idle, zero stall and with ms3 I can add idle valve rates from voltage drop so using both power windows doesn't stall the car.

Cold start is almost as good as my wrx, stoked after all the time spent on the closed loop system only to have to control the idle air valve or pwm and the warm up enrichment's... of course tuning includes the idle fuel and spark tables but that's pretty straightforward compared to the fussy closed loop beast... it's not for the time/skill/patience poor, thank god I have had the time, because the other two were in very small supply.

However, I have learned buckets from the forums and manuals over the past month so maybe its all worth it... :shock:

Caffeine · Postby **Caffeine** » Sun Jun 07, 2015 8:24 pm

Tuning PID coefficients is an art in itself :-) very easy to get in to a feedback loop and continually overshoot your setpoint

IanR · Postby **IanR** » Sun Jun 07, 2015 10:14 pm

Caffeine wrote:Tuning PID coefficients is an art in itself :-) very easy to get in to a feedback loop and continually overshoot your setpoint

Im pretty sure my pwm duty settings were off to start with but testing for it ran into a variety of issues like the fuel cutout and it would stall under 32% duty in test mode but in open loop I can idle at 26%, anyways Im sure my skill is the error...Ill try again when I get bored or are forced to by regassing aircon so its back in the mix. Thanks for the input. :beer:

IanR · Postby **IanR** » Mon Jun 08, 2015 5:35 pm

iPhone isn't great actually but some pics after a good clean inside n out.

davekmoore · Postby **davekmoore** » Mon Jun 08, 2015 6:32 pm

Nice!

Especially like the seats.

IanR · Postby **IanR** » Sat Jun 13, 2015 6:02 pm

Time to replace the pathetic std radiator, the car run between 95 and 100 all day long, and its winter... this morning I was out n about at 530am, it was 12 degrees and the fans were kicking in just rolling at 70kph...cant be right, but boost changes things.

Such a difference, this is a 42mm ebay special.

fans went straight on no fuss

Looking good.

One step closer to installing this...

..and building up these.

On a side note, copped flak on turbomiata this week for how "pathetic" it is not to have mastered closed loop idle, small price to pay to get help on a steep learning curve but man they take it serious over there, be ready!