Mk1 1.6 ecu

[scallan]

Looking to find out if this ecu is from the 115bhp 1.6 mk1 or the 90 hp mk1. Code is b6gp 18 881b .
any help apeiciated as google isnt reli helping. Thanks james

[MX5Spares]

Not sure exactly but most 1.6 have B63H ecu for 1.6 .Presume then its 1.8 but there are about 10 different ones and then some with /without immobilisers also.I may be wrong but does 1.6 not have 2 plug in connectors and 1.8 have 3 ? I have several asst ecu,s here but none with that number

[scallan]

Im not sure how many plugs are on it ill have a check and its deffinitly 1.6 as the intake manifold is different to 1.8

[MX5Spares]

Might be UK type with immobiliser built in

[scallan]

Ill have a look but didnt think so car is on a switch to start. Also he says car is low on power so i was thinking its the later 90 hp engine

[MX5Spares]

Key could be strapped on to aerial/key reader under dash ( bypassed basically) and not visible at dash.90bhp could well be UK car.Did you advance the timing at cas to see if that helps

[AndyJF]

Think it might be a 90bhp one going by the last post on the following link.
http://forum.miata.net/vb/archive/index ... 01219.html