fpr

[cooltom31]

looking into tuning on my c25xe engine, it has 3.0 cams, superchip and full stainless exhaust ive heard upgrading to a bigger fuel pressure regulator helps but which is the best to go for the 3.8 bar one or the 4.0 bar one?:cool:

[craig green]

4 bar usually on the 3.0 cams.

Its not bigger, just rated to a higher pressure. A std Bosch one will be fine.

[cooltom31]

does it have what bar they are stamped on? as the cams were fitted when i bought the car so maybe the fpr has allready been changed.

[alan b]

afaik the 3 litre/3.2 omega engines came with the 4 bar reg standard?