denmah

iTrader: (2)

people have been asking how big the box is, and i guess its hard to tell even though my fingers are in that picture, i could have freakishly large or small hands soo...

catchumdaylee

Is there any way to change the fuel tables to PSI vs RPM instead of KPA? I see that being a p.i.t.a.

denmah

iTrader: (2)

possibly, i can ask DIY

that would be nice haha

douglee25

Just setup an excel table to do the conversion from PSI to KPA and vice versa. Would that work?

Doug

superbean

Keep in mind resolution amounts of Bar, or 100 Kpa, can be different between two map sensors. Oem style map sensors on most cars only read 1 bar (vacuum), wheres most aftermarket pieces can read 2.5 bar (255~kpa), like in Megasquirt 1 built in to the pcm, or most aftermarket pieces intended for boost are 3 bar. So it will see 1 bar of vacuum, (non boost), and 2 bars of boost .. or roughly 200kpa, 29psi~

So, this chart starts AFTER the initial 100 kpa, so add 100 kpa to the values above for the boost level. Confused yet?

denmah

iTrader: (2)

thats why they don't offer a switch to PSI

douglee25

-100kPa, 0, 100kPa, 200 kPa, 255kPa. That would be the range of the 2.5 bar sensor, correct?

Does the sensor read in absolute?

Doug


EDIT - DUH!!! Big double DUHHH!! I answered my own question - MAP - Manifold Absolute Pressure! Off day today.

denmah

iTrader: (2)

when i am tuning a MS1 car that comes with a 2.5 bar onboard sensor, it reads 253kpa roughly 22.x lbs of boost

Reject

iTrader: (24)

great work man! always love following along on here and on FB

catchumdaylee

here is tuning in psi, the is nothing odd about it. It's very simple, I can tune most cars with in 30 mins with this software.





here is one from Denmah's map on tuner studio





I just find it much simpler , I don't want to have to look at a conversion chart while I'm trying to street tune a car.

aknovaman

iTrader: (7)

I strongly suggest you guys smooth the VE table. It can be copied, pasted into HPT, smoothed then copied and pasted back into tuner studio. That's the easiest way I have found to do it after running the auto tune feature in tuner studio.

catchumdaylee

Also Denham this is a pretty great write up and should be a sticky. And I'm sorry to jack your thread and keep about going on about this.

catchumdaylee

Quote:
DIYAutoTune.com Not really. The main problem is that tuning in absolute PSI is going to look almost as odd as kPa, and the ECU doesn't think in relative pressure like a boost gauge.


I have to ask how does the ecu not think in relative pressure? it reads 0-5 volts from a map sensor, it puts a value to a voltage. 2volts = 200kpa or 2 volts=7psi . I don't see what the difference is here. All that ecu should care about is what the input voltage is. What am I missing some thing here ?

denmah

iTrader: (2)

i dunno dudes, if its lean at 160kpa i put fuel there, easy enough for me lol

SPRAYED 01

iTrader: (22)

Dude, you are awesome for posting all this info. Where do you find time for this stuff? I'm always at work or with family and i thought i got allot done

denmah

iTrader: (2)

i dont have a girlfriend or a family... so that about clears up my schedule lol

Reject

iTrader: (24)

haha nice

Twin turbo c5

I just got it installed on my junky four door Fairmont. easiest install I ever done even easier than ms1 and msd 6010. We'll be firing up the junkyard 6.0 with 80mm hopefully next week.

tonypaul

iTrader: (2)

How well does the AutoTune feature work? Does it get the fuel/ spark close and then you need to fine tune?

NufNuffZ28

iTrader: (13)

Autotune only changes fuel. You will need to manipulate the fuel yourself...

It works pretty dang good if you put in some seat time!