Interfacing boost monitoring with DS

[ALBERTAN]

Does anyone know how to do this? The most recent issue of GMHTP indicates Red Amrstrong engineered an interface so that DirectScan monitors boost. Could the TLink Boost Sensing Harness be used?

 

[ALBERTAN]

Ken did you give my post a one star rating? *snif*

 

[BoostKillsStres]

Snag a boost harness and map sensor from Ken and your almost done, you then need to get a real good gauge and a pressure source and map boost to temp to build yourself a lookup table and then don't forget to account for baro changes effecting your readings and your good to go.

HTH

By the way if you build yourself a wideband setup you can also input the WB voltage and then build an A/F table using a pot and a 9v battery

 

[kenmosher]

Originally posted by ALBERTAN
Ken did you give my post a one star rating? *snif*

Yeah, I'm that petty ...

Seriously, I didn't even know you could rate a thread! (I just played with it ... after looking for about 10 minutes to see HOW you do it! Never noticed that before ... I guess a lot of people don't use it?)

Anyway, the input from the boost harness and 3 BAR works fine with DS. You have to then make yourself a little spreadsheet or something to correlate temperature to boost. Also, TurboLink calibrates (zeros) the readings, so you'll have to do a similar thing manually with your spreadsheet so that you are accurate (boost can fluctuate +- 1/2 psi during the day and it can vary as much as 2 psi with altitude changes).

Finally, I don't know how linear the MAT is in DS ... if the MAT tables were used that I use in TurboLink, the middle is pretty linear but the higher/lower ends of the tables are pretty "squashed". Therefore, it won't necessarily mean that a temperature change of 1 degree means the same thing in boost at all points in the scale.

 

[ALBERTAN]

Thanks for the info Ken. I was just razzing you. I saw you in the forum last night and figured I'd poke a little fun. I know a guy that did something similar a few years ago with DataMaster for WB O2. I'm gonna talk to him as well and get his thoughts on it. I'll certainly be ordering up the harness before long. Come to think of it, I believe my buddy has one I can borrow from him.

 

[kenmosher]

I was just teasing back too!

Hey, I noticed you have Sy/Tys in your signature ... ya know, TurboLink works with those too!

 

[ALBERTAN]

Yeah I know. I haven't driven the SyTy's since I got the Buicks though.

 

[Dean]

Mark, Ken, I'll apologize right now for my lack of knowledge and ignorance when it comes to this stuff. I know very little about electronics. Oh, and Mark, you can ignore my earlier e-mail.

Originally posted by BoostKillsStres
... and map boost to temp to build yourself a lookup table and then don't forget to account for baro ...

Lost me here. Treat me like a fifth grader, if you have the patience.

- How do I map boost to temp?
- What is a lookup table, and what do you mean by / how do you build a lookup table?
- How do I account for baro changes?

A WB is in my future, but I wouldn’t have a clue as to how to interface that with DS (as indicated by the above). Build an A/F table? Using a pot?? I do know what a 9v battery is.

Originally posted by kenmosher
... You have to then make yourself a little spreadsheet or something to correlate temperature to boost.

Wouldn’t know where to start, except to open Excel, and I’m somewhat limited in the use of that as well.

... TurboLink calibrates (zeros) the readings, so you'll have to do a similar thing manually with your spreadsheet so that you are accurate...

Yep, wouldn’t know how to do something similar with a spreadsheet.

Thanks in advance for your patience.

 

[Dean]

Oops! A little to late... thanks for the e-mail reply, Mark.

Dean