Wideband

[tsi4444]

I recently got around to purchasing my fuel system and Dsmlink. I have been reading up on tuning to try and figure out what I am getting myself into. I have noticed that a lot of guys have paired up a wideband O2 with their Dsmlink. I was just wondering if you guys think this is necessary and if so what is the advantage of having a wideband along with the Dsmlink.

[david-b]

Yes. Widebands help a lot with no matter what tool you're using to tune with, whether it be DSMLink, APEXi ECU mappers, or even a AFC. Helps way much and is higher recommended.

[steviek]

yea and plus there is an awesome writeup on how to install it

[TheRomer]

OK, I'll actually answer your question for you. Wideband 02 kits are used to read exactly what it is called, Wideband. Your stock 02 sensor is only a narrowband sensor. So to put it into perspective, the 02 sensor is by no means as accurate as a wideband sensor. It is a lot more easy to tune with, becasue the Air/Fuel ratio you are getting with the widebands are usually within .1 AFR, which means it is extremely accurate. They take about 100,000 samples a second, so the info you get from these sensors are so much greater then your stock 02 sensor. Whats does this mean?

You can tune more accuatley, and also not have to worry about running too lean or too rich. They are simple to hook up, and also simple to tune with. Once you get one of these, you will never trust an 02 sensor again.

[kjewer1]

I don't think you are getting your money's worth out of DSMlink unless you are logging WBO2 and Boost through it. These two additions increase the usefulness of DSMlink by a factor of about 10 million. IMO/YMMV.

I don't think WBO2s can actually sample at 100 times/sec. I'm almost positive most WBO2s refresh every 65 milliseconds or so, but I can't for the life of me remmeber where I got this information... At any rate, you're limited by your sample rate in the logger regardless of how fast the WB samples, and with DSMlink, the sample rate is not very high, especially for 1Gs.

[TheRomer]

Well Kevin, knowing you and all, I would take your info over mine any day, I actually got that info off of ExtrememePSI, since I am in the market for one as of right now. But they are probably just trying to sell the product. Damn salesmen . You are also correct on the logging program. DSMlink certinaly cannot keep up with that rate of speed .

Edit> Just checked it out again, and that 100,000 times a second is actually the linear output, not the actual sample rate. That would actually be 10 times a second according to the site. My bad.

[tsi4444]

Thanks for the replies, I searched around on the dsmlink forums and decided to go with the innovate lc-1 wideband. I got it for $180 off of ebay which seemed like a good deal to me. Kjewer1, you mentioned logging boost through dsmlink and I was wondering how i go about doing this. Sorry if its a stupid question, but I am very new to this tuning game.

[scottsee]

I used a GM 3.3bar map sensor, cliped my MDP sensor and solderd the weather pack into the MDP wires. Then just sellected the GM33bar value in the Captured Values menu of DSMlink, and sellected the MDP input option..

[tsi4444]

Could you explain what a Gm 3.3bar map sensor and what MDP sensor are.
Thanks in advance

[gthompson97]

Originally Posted by scottsee

I used a GM 3.3bar map sensor, cliped my MDP sensor and solderd the weather pack into the MDP wires. Then just sellected the GM33bar value in the Captured Values menu of DSMlink, and sellected the MDP input option..

Haha, as well as I understood that, I think you're going to need to elaborate a little more for tsi4444. What you said to him was like trying to give me directions in Japanese, I wouldn't have understood a WORD of it.