fiestaturbo.com

[Seaniboy]

Hello as a few people may know from my previous threads i am putting a FRST engine in a MK5 Escort but i want a AFR gauge but as the FRST does not have a lamba sensor could i use any of these and just weld it in the down pipe?

http://www.buypartsby.co.uk/lambda_sensors.php

Cheers

[Seaniboy]

Bump.

Has no one fitted a AFR gauge to their FRST?

[FedeArg]

I fitted an AFR to a mustang once. It's really easy, you only must be sure which cable is the one that gives the signal. You could use any of the lambda sensors that are shown on the link you mentioned. The thing is that lambda sensors work properly when they are hot so that is why you can see sensors with one or two heaters. If you want just for showing off then go for the cheapest one, but if you want to have more accurate reading go for the INT16333 or the INT16335. I would personally go for the INT16335 as it is easy to connect and has a heater so it would start reading with some accuracy a few seconds after starting your engine.
If your car has a CAT put the lambda sensor before it, never after it as it would allways read wrong, put it near the exhaust manifold so it gets hot fast and if you have a CAT or silencer near the ehhaust manifold put the lambda sensor right before it so the blockage that the silencer or CAT makes will help the lambda sensor to be in contact with more gases to give you a better reading.

Regrding the accuracy of a narrow band lambda sensor (0 to 1Volt) they are ok but if you are really pushing your engine to it's limits I would suggest a wide band lambda sensor (0 to 5Volt) but they are more expensive and a normal AFR gauge won't work so you will need a specific one.

Just remember that a turbo engine doesn't have the same stoichometric (spelling) point as a N/A car. A turbo engine needs to have a richer mix than a N/A car.

Good luck

Fede

[Seaniboy]

I fitted an AFR to a mustang once. It's really easy, you only must be sure which cable is the one that gives the signal. You could use any of the lambda sensors that are shown on the link you mentioned. The thing is that lambda sensors work properly when they are hot so that is why you can see sensors with one or two heaters. If you want just for showing off then go for the cheapest one, but if you want to have more accurate reading go for the INT16333 or the INT16335. I would personally go for the INT16335 as it is easy to connect and has a heater so it would start reading with some accuracy a few seconds after starting your engine.
If your car has a CAT put the lambda sensor before it, never after it as it would allways read wrong, put it near the exhaust manifold so it gets hot fast and if you have a CAT or silencer near the ehhaust manifold put the lambda sensor right before it so the blockage that the silencer or CAT makes will help the lambda sensor to be in contact with more gases to give you a better reading.

Regrding the accuracy of a narrow band lambda sensor (0 to 1Volt) they are ok but if you are really pushing your engine to it's limits I would suggest a wide band lambda sensor (0 to 5Volt) but they are more expensive and a normal AFR gauge won't work so you will need a specific one.

Just remember that a turbo engine doesn't have the same stoichometric (spelling) point as a N/A car. A turbo engine needs to have a richer mix than a N/A car.

Good luck

Fede

Thanks thought this was the case. Will get the car on the rollers and use wide band sensor there. AFR in car is just to give a good indication that it mixtare stays good

[ianFRST]

get some pics up when done