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Old 07-27-2012, 01:27 PM   #1
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P0102 p1319 p1318 p1317 p1316 p0112 p0150

I know!!!
Long story short
99 3.4 swap
Just changed coils and spark plugs
Installed new cheapo MAF
It starts, runs like crap and dies
With no MAF it's better
Runs and is drivable but still like crap
With my old Bosh MAF (just cleaned) its even worse
Checked for Vacum leaks
And after of 5 min running in my garage all of this showed up
P0102 p1319 p1318 p1317 p1316 p0112 p0150
Some misfires , o2 , MAF
All this crap
Funny thing
Yesterday before coils install it showed p0130 p0150 and few misfires damaging to the converters
Any ideas?
Is it possible that all of that is because I'm running 2.5 ecu program??
Lean as #€%
I will reprogram it but I'll haVe to take it to the dealer to get immobilizer codes
What should I try next???

Btw
http://986forum.com/forums/boxster-parts-sale-wanted/36510-wtb-here-goes-again-durametric-1vin.html

Last edited by golonaus; 07-27-2012 at 01:30 PM.
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Old 07-27-2012, 01:52 PM   #2
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I firmly believe that the problem(s) lies in the fact that you're still using the 2.5's ecu . Others with more experience will hopefully chime in .
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Old 07-27-2012, 02:13 PM   #3
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reseat your coil connectors.
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Old 07-27-2012, 02:20 PM   #4
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Quote:
Originally Posted by boxster6354 View Post
reseat your coil connectors.
They r fine
Double checked them
Coil after coil
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Old 07-27-2012, 02:26 PM   #5
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What intake tube and DME are you using?
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Old 07-27-2012, 02:34 PM   #6
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Quote:
Originally Posted by blue2000s View Post
What intake tube and DME are you using?
Stock 2.5 dme
Custom 3.5" air setup
No room for airbox( im running on stock mount height)
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Old 07-27-2012, 03:12 PM   #7
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Quote:
Originally Posted by golonaus View Post
Stock 2.5 dme
Custom 3.5" air setup
No room for airbox( im running on stock mount height)
The DME has to be calibrated to the velocity signal that comes from the MAF. The MAF is a point reading and that has to be extrapolated to a volume flow reading. If you change the diameter of the housing of the MAF, you have to recalibrate the DME or condition the signal to one that is correct for the DME.
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Old 07-27-2012, 04:17 PM   #8
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Quote:
Originally Posted by blue2000s View Post
The DME has to be calibrated to the velocity signal that comes from the MAF. The MAF is a point reading and that has to be extrapolated to a volume flow reading. If you change the diameter of the housing of the MAF, you have to recalibrate the DME or condition the signal to one that is correct for the DME.
Ok
But would it trigger all of those codes??
Some members here are running on stock map I think!
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Old 07-27-2012, 04:46 PM   #9
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If the housing is larger than the DME expects, it will think the airflow is lower than it is. The car will run lean. The DME knows it's lean by reading the O2 sensor. So it knows there's either a problem with the MAF or O2 sensor.

Others with the larger engine must have upgraded their DME or are using the 2.5 MAF housing.
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Old 07-27-2012, 06:43 PM   #10
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So I guess I'll have to remap my DME!!!
Soooooon
Anyone with swap want to chim in, if they had the same issues???
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