AFR gauges

[europeanme]

anyone have any recommendations when it comes to make/model etc....

I'm a little "in the dark" with these pieces of kit...

cheers
Mike

[bikerjim]

I just got one of these - http://www.ebay.co.uk/itm/INNOVATE-M...item45f78df018

I emailed them and told them I am a student (which I am ) and asked for a discount. they gave me a 6% discount lol, was better than a kick in the teeth.

Seems to work well so far and dead easy to set up.

[K Simmonds]

That Innovate one look's excellent. However, I'd go the whole hog and get a Zeitronix unit that does the lot, AFR, EGT, Lambda, Boost, RPM, IAT, ect,ect,ect.

[pasbogdan]

Your unit must log afr/boost/rpm.This way you will use it to analise data not only supervise your setup.

[vertigone]

Got an innovate one very good stuff, you can log AFR data with it to analyze later

[europeanme]

I just got one of these - http://www.ebay.co.uk/itm/INNOVATE-M...item45f78df018

I emailed them and told them I am a student (which I am ) and asked for a discount. they gave me a 6% discount lol, was better than a kick in the teeth.

Seems to work well so far and dead easy to set up.

I saw these after the one I was after had sold out.....

it's worth another look.....

@K Simmonds, I'm not to fussed about logging other info EGT, lambda etc....I'm trying to keep my build simple and keep costs down...

thanks for the advice folks....

Mike

[GazzaG60]

depends if we talk narrow or wide band

on a stock motronic car i feel the good working order of the nbo2 sensor is very important. whilst on boost wider ranges are needed.

depends on what you want to measure/attain.

for me tuning and more boost requires wbo2. ensuring wot switches, circuit working nbo2

ive used summit racing nbo2 and used inovate lm-1, lc-1. my favourite though was the vems wb02/egt.

[europeanme]

I'm sorry Gazza, that has all just gone over my head....self-confessed thickie here...

I'm trying to keep gauges etc to a miniumum as the more I see the more i'll worry...


i'll google summit racing and see what they've got...

cheers for your help....

I'm from the olde worlde days of mechanicals....its all a black art to me...

mike

[prj]

I don't recommend the Innovate units. Their circuits are just not protected very well, and they often die prematurely.

The VEMS Round is a very nice gauge with dual display.

Also, the SLC DIY2 is very good, but it's out of stock atm. Need to ask the seller when it will be in stock again.

[europeanme]

I don't recommend the Innovate units. Their circuits are just not protected very well, and they often die prematurely.

The VEMS Round is a very nice gauge with dual display.

Also, the SLC DIY2 is very good, but it's out of stock atm. Need to ask the seller when it will be in stock again.

ok....

do you need to run VEMs to get a VEMs gauge?....

I did check the SLC....and have asked the question...

[vertigone]

perhaps it can help :
http://www.innovatemotorsports.com/r...B_Shootout.pdf

[prj]

ok....

do you need to run VEMs to get a VEMs gauge?....

I did check the SLC....and have asked the question...

If you get the standalone VEMS Round, then no, you don't need VEMS for it.
To be exact, this is the one you would need without VEMS:

http://shop.vems.hu/catalog/roundwbo2egt-p-101.html

[GazzaG60]

basically a wide band gauge does the extremes well so say 8:1 - 13:1 and then 15:1 to ....

narrow band is extremeyl accurate at stoich so 14.7:1

the stock sensor is narrow. its role is to ensure a good lean burn, emmissions and fuel economy.

the widebands role is to ensure accurate WOT and lean readings. they are not that accurate at stoch hence the reason some use both.

i see it this way.

with motronic if you got an issue with it being rich then narrowband can help find the issue if you know how to read the issues. basically a narrowband is an ultra fast reacting sensor to maintain 14.7:1. on crusie you see the lights whipping up and down. when you floor it it goes usually 1 light from top.. on warm up they build from say 2 lights to 4 then start to pulsate if that makes sense.

wideband gives accurate readings at WOT. on boost etc. for tuning extra boost, fuel a wideband for me is essential.

vems gauge is easy to fit. doesn't need vems and looks great in the airvent pods.

when i had my S2 i had 3 gauges. vems egt/wbo2, defi boost gauge, turbosmart eboost 2 EBC. the defi and the eboost lived in a perin racing pod that fits over the steering and fits the s2 spot on. it was a subaru part and was good quality. not sure if they still exist. the black audi vent gauge was from a forum GB

[prj]

basically a wide band gauge does the extremes well so say 8:1 - 13:1 and then 15:1 to ....

narrow band is extremeyl accurate at stoich so 14.7:1

the stock sensor is narrow. its role is to ensure a good lean burn, emmissions and fuel economy.

the widebands role is to ensure accurate WOT and lean readings. they are not that accurate at stoch hence the reason some use both.

What makes you believe that? There is absolutely no gain in having a narrowband sensor over a wideband whatsoever.
If you read a little about how a wideband sensor works, you will see why that statement of yours does not make much sense.

with motronic if you got an issue with it being rich then narrowband can help find the issue if you know how to read the issues. basically a narrowband is an ultra fast reacting sensor to maintain 14.7:1. on crusie you see the lights whipping up and down. when you floor it it goes usually 1 light from top.. on warm up they build from say 2 lights to 4 then start to pulsate if that makes sense.

I guess you have seen one of those rich/lean gauges? They are not very useful, because the narrowband sensor is specified to switch high and low around the 14.7 point, and not to measure anything.

wideband gives accurate readings at WOT. on boost etc. for tuning extra boost, fuel a wideband for me is essential.

Bosch LSU4.2 sensors give accurate readings from 0.65 lambda to infinity.

I understand you are trying to help, but your post has a very large amount of misleading information.

There is no need for a narrowband at all, and a WBO2 sensor can be used to generate a switching signal around the 14.7 point, with which the ECU will be perfectly happy with.
In fact, inside the ECU lambda code, there are only 5 possible states that it can read:
* Signal max
* Rich
* Stoich
* Lean
* No signal

During normal operation you never reach Signal max or No signal, effectively only three states (switching) are distinguished. There is no measuring and a wideband is actually more accurate everywhere.

[europeanme]

thanks guys....I've read all the info and it sort of makes sense know...

there maybe a difference of opinion and its just an example of experience...

is that VEMs a kit? or do I need other bits