Because fuzz's car is insanely hot, I'll tell you guys straight up how it is.
I have had both the JimC and MarkD, and if you can use 93 octane, get the MarkD. The MarkD just makes the car feel much faster. Say what you will about how slow the M42 is, with this chip, the car is just so much better to drive.
When I switched from the JimC to the MarkD, I noticed an instant difference. I know that the ECU has to relearn the chip, but that first drive with the MarkD was noticably better. You're given more pull in the high end and a whole lot more revs to play with. You don't know M42 fun until your revs go past 7. The revs are really helpful in the autox as well. You can hold the car out longer and gain that edge on other stock M42s.
I wouldn't settle for anything less than the MarkD chip.
I have had both the JimC and MarkD, and if you can use 93 octane, get the MarkD. The MarkD just makes the car feel much faster. Say what you will about how slow the M42 is, with this chip, the car is just so much better to drive.
When I switched from the JimC to the MarkD, I noticed an instant difference. I know that the ECU has to relearn the chip, but that first drive with the MarkD was noticably better. You're given more pull in the high end and a whole lot more revs to play with. You don't know M42 fun until your revs go past 7. The revs are really helpful in the autox as well. You can hold the car out longer and gain that edge on other stock M42s.
I wouldn't settle for anything less than the MarkD chip.
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