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Smitty

03-21-2016 07:11 AM

Map sensor 502 Mag MPI

Anybody ever replace one with an automotive one ? Merc wants $ 165.00 where as one from Napa is like $ 45.00 I think it is a 1 bar ??? Just guessing.

Thx

articfriends

03-21-2016 07:45 AM

Buy a 1 bar replacement for 88 to 95 chevy 1/2 ton tbi 5.7 at autoparts store

Smitty

03-21-2016 08:36 AM

Perfect. Thank you !!

Pismo10

03-23-2016 08:26 AM

Good to hear..

BUP	03-23-2016 10:42 AM

It is wise to check with a scan tool your MAP readings after changing from one to another brand maker. MAP sensors all are not created equal and the same goes for IAC's - when buying from different manus but still is the same part. I have tested this with the scan tool as well and the readings can be different. Sensors come into play alot when it comes to air & fuel delivery, throttle response and idle quality .

MAP sensors 2 bar for SC engines for low to mild boost

1 bar for NA engines

92nsx

03-23-2016 12:15 PM

Quote:

Originally Posted by BUP (Post 4419665)

It is wise to check with a scan tool your MAP readings after changing from one to another brand maker. MAP sensors all are not created equal and the same goes for IAC's - when buying from different manus but still is the same part. I have tested this the scan tool as well and the reading can be different. Sensors come into play alot when it comes to air & fuel delivery, throttle response and idle quality .

MAP sensors 2 bar for SC engines for low to mild boost

1 bar for NA engines

I believe there is some way to tune or calibrate the new sensor(s) ?. I just can't think of it off the top of my head.

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