SpudH
Well-Known Member
Ade, you're not going to win much support as a newbie having a go, rightly or wrongly, at one of the most senior members on here. While I feel Wammers was a bit OTT in his initial comment, you have to understand his frustration. He's got near on 9000 posts, 10% of which will be slagging off people, 10% havin a laugh but 80% spending his own free time giving great free advice. I've had many a tiff with the old bollix but you've got to give the cantankerous old git the respect he deserves cause much as I hate to admit it he's bloody well right 99% of the time:doh::doh::doh:
The longer you spend on a forum the more you see guys coming on who haven't bothered using the search function asking questions that have been answered 100 times before making it harder to find the threads with good info. There is only so many times experienced people will type out their experience to pass it on. In your case you're getting angsty and you've not even bought the Rangie so are unlikely to be able to contribute to the forum until such time as you do.
Modding the M51 engine has been dealt with in detail several times. You were really given the answers you need in searching under Aaron Beast unleashed's posts. The various approaches and their associated pit falls have been pointed out. You have 3 stages:
1. The simple plug in chip most of us use to make the P38 DSE driveable. Costs little but puts gearbox and head gasket at a little risk if you cane it. This can be done with or without adjusting the boost up to manufacturers max recommended.
2. Jeremy Fearns approach, Full ECU remap in conjunction with larger intercooler. Again turbo boost should be brought up to recommended max. The existing turbo is more than capable of putting out 1.5bar if you're brave which is more than enough for the diesel pressure a 100,000 mile pump can put out. As has been pointed out to you, the torque output of a chipped DSE exceeds the capacity of the gearbox. It might be possible to fit a 4.6 gearbox but no-one has knowingly done one yet, thats not to say it hasn't happened.
3. Anything else above that but it is likely you will cook the head if you don't manage EGT. This engine was raced in BMW 3 series so performance mods have been made but a bigger turbo will be totallty unsuitable to the low down torque requirements of the P38.
A Jeremy Fearned P38 is more than capable of getting its live axled self into all kinds of trouble if caned on the road, a 3 series its not, so care would be needed on the handling if you mod it too much.
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