$270 thats bloody good, thats the cheapest i have heard,

ill give that a try!! LOL

 

OK an update ! Got my 4 wire LSM11 Bosch sensor & Autronic WB running over the last 3 days (had to fabricate a test pipe to insert in the rear of the exhaust) Wow ! this unit is excellent

It responds very fast and is dead consistent, If I made a 10% change to a fuel point, that change was directly reproduced in change in A/F ratio for this test point...... I am very happy indeed, responce is very fast, faster than I can make changes thats for sure. Of note I fabricated the test pipe as per Autronics instructions in the manual and it is a fair bit longer than the one I used on the Fueltronics/Microtech unit from memory. Also after following the problems with sensor readings on the DIY WB page on turbo cars (excessive system pressure) causing inacurracy in the readings for which all WB meters I know of cannot correct for, I think I will stick to this method of sampling the exhaust gas.

How are others doing this (sensor placement, pipe specs)?

P.S. Running a consitent 14.5 to 15.4:1 a/f ratio now from 2000rpm to 3750rpm from load ranges covering 16"Hg to 4"Hg (converted for you US guys and autometer gauge users).....speed of the meter helped me define a certain rich spot in the 2k to 2.5k range near 4"Hg load point was running about 12.1:1, fixed it now to around stochiometric. So I should get even better fuel consumtion now in cruise mode
Previous average was 13L per 100km (combined city/highway) hoping for a 10+ percent improvement on this.

 

Wooo Hooo Combined city/highway average has improved to an official 11.79 Liters per 100km.

I made sure my speedo was calibrated against another car and filled the tank to the rim. I am pretty stoked with this especially considering this was with the tune involved as well (about 1/2 to 3/4 hour) slow speed running and lots of idling too.

So I am getting 430km to 50lt of fuel on my single turbo 13B driving to work and back daily driver, this includes 14 warm up and cool down cycles, 70% highway (constant speed cruise) and 30% city (stop start low speed). How does this compare with others ?

Let me know.

 

Although I haven't got my car put together, and so haven't used it on my 13BT, I have tested out the DIY WB in a friends NA 3.0L V6, and found it to work well. It responds quick enough with the Display, its even better on an O-scope. As far as accurate, I haven't really tested it against a reliable reference unit, but my friend, on who's car we tested it, says that is is pretty close ( +/- .2 max) to what he saw while dyno-tunning.

I figure that placing the sensor too far upstream is what has been the cause of inaccuracy in boosted cars. I plan to run mine near the end of the DP. Any reasons I shouldn't?