Hello. Is it possible to install a 2 bar map sensor on my YJ just by removing the stock 1 bar map sensor and plug by cutting the wires and install another one. Its for a boosted YJ. Will the ECU be ok with the readings of boost? Thank you.
P.s the map sensor is from a saab aero
will the ecu read, you will have to try it out to find out. i don;t read many turbo jeeps on this forum. you need to hit a stand alone ecu forum like one for mega squirt and ask on there. i know they had a number of boosted jeeps back about 8 years ago when i was building my bmw up
I don't feel like working on anything, at this time.
Welcome to the forum. Tubocharging is very ambitious!
The ecu for the YJ cannot be reprogrammed and unfortunately you will need to change the cals to make a turbo work. You need a different repsonse curve for the injectors when you get into positive boost and I wish I could say for sure the ecu will make use of the positive numders from the 2 bar I am not sure. There are a few turbo 4.0l threads here on the forum but there are a couple places that have much better info on doing the turbo 4.0L. Look on these sites:
I have already seaeched but not a clear answer was found anywhere. Mine is 2.5 l and is already turbocharged, but the map sensor dont let the boost rise and cuts fuel. Only at 20% of throttle it can be driven. Thanks for your help anyways
Did you search: http://www.4bangerjp.com/forums
The fact you are just adding the 2 bar tells me there is a few issues that are adressed in the threads there. The wide band O2, 2 bar, injector change, adjustable fuel pressure regulator, adjustable map and someway to change your calibration are all needed on the turbo setup. You have to have someway of compensating for all the additional air you are putting in or you will be running very very lean and you will burn the engine.
Read through that forum. There is a bunch of good info and I know it is difficult to find the info you need at times but I run the 2.5L and really liked the turbo idea. Please tells us what you have done to your turbo so far.
I know that the ecu is the problem, but being a budget buildim trying to keep the cost low. This build cost me about 700$
I have an mx5 turbo too which is tuned with a piggyback and never had a problem 3 years at 12 psi.
Thanks once again that your are trying to help a new member instead of flaming him
So no 2 bar map sensor. Change of plans then.