tuning question. Dsmlink/Wideband

[pj91gsx]

I have the dsmlink. My friend was telling me I need a wideband. And my brother was telling me I needed a Exhaust temperature gauge. I'm confused on what I need to tune my motor. I am thinking I just need the dsmlink and wideband. Please help.

 

[gsxtasy]

Wideband is a FAR more useful tool than an EGT gauge. You should pick up a GM 3.3bar MAP sensor while your at it. The two of these together make for an excellent tuning setup, with DSMlink that is.

 

[throwedgsx]

Basically you WILL need a wideband to tune your car. EGT doesn't help you much

 

[throwedgsx]

Also i recommend you read up on some forums before you start. The Link forums are a great source also a lot of ppl here on tuners have good information for you. Tuning is pretty easy once you find out what You have to do and what to look for when tuning

 

[Gstclipse69]

EGT is just to make sure your not running too hot, hence too lean. Its just a failsafe. A wideband o2 sensor will tell you the exact afr unlike the stock narrowband. You can also wire the wideband into the second o2 sensor and log the afr on dsmlink.

 

[pj91gsx]

oh. I understand a lot more. thanks.

 

[pj91gsx]

for the gm maf will i need a maf translator?

 

[gsx rated98]

What turbo are you running. Unless your running a large turbo, a stock 2g mas will work perfect.

Id highly advise you get on the DSMLink board. Huge wealth of knowledge.

 

[pj91gsx]

16g right now. maybe a 2003 holset from a dodge cummins turbo diesel. but I dont know if I want to put that on with stock internals.

 

[pj91gsx]

would a 4 bar map be better than a 3.3?

 

[snowborder714]

would a 4 bar map be better than a 3.3?

Yes because it can accurately read more psi (boost).

3.3 Bar = 47.86psi
4 Bar = 58.01psi
5 Bar = 72.52psi

I personally went with the 5 Bar MAP sensor because it was the same price as the 3.5 Bar.

 

[pj91gsx]

ok. well im going to push about 20 psi. so then I guess the 3.3 will be perfectly fine. thanks, Austin

 

[gsxtasy]

Yes because it can accurately read more psi (boost).

3.3 Bar = 47.86psi
4 Bar = 58.01psi
5 Bar = 72.52psi

I personally went with the 5 Bar MAP sensor because it was the same price as the 3.5 Bar.

Actually, on all MAP sensor's 1bar is used for vacuum, so a 3.3 bar will only read to 33.35psi, not 47.86. Same with the others.

-Aaron

 

[pj91gsx]

thats plenty good enough then. also do I need a map translator for the map or does the dsmlink play that part?

 

[turbosax2]

No, you do not need a map translator. The map sensor's output wire gets wired into the wire of your choice on the ecu so you are able to log it directly through DSMlink.

externalsensorinstall [ECMTuning - wiki]
externalsensorinput [ECMTuning - wiki]
externalsensorlist [ECMTuning - wiki]

 

[pj91gsx]

awesome. thanks.

 

[snowborder714]

Actually, on all MAP sensor's 1bar is used for vacuum, so a 3.3 bar will only read to 33.35psi, not 47.86. Same with the others.

-Aaron

Ah, I knew that they used 1 bar for something. Thanks for mentioning it!

 

[pj91gsx]

ok. if I pick up a gm map then I need the plug and wires to splice into my ecu for the dsmlink right. Im going to see if I can find a gm map at the junk yard tomorrow.