IP Full Load Adjustment Procedure for the MW and M pumps
IP Full Load Adjustment Procedure for the MW and M pumps
With thanks to all of you sharing so much useful info, I will share the mods to my fun project.
The car is baptised ´Dragoncito´, little dragon, and has an OM662 2.9 TDi indirect injected, with 5,5 mm. M-type IP.
With K&N filter/ non operative EGR and oil catch tank in the PCV , the pump mods I started with were:
- 3/4 CCW on 25
- 1,5 CCW on ALDA
- idle reset with PLA (29)
Then I fitted an MBC and set the boost at 0.8 bar from 0.5.
Replaced the mufflers with a straight through resonator (just thát gave a 100 rpm increase in idle speed; some pumping losses!!).
To make use of the added air flow I went to phase two on the IP:
First
- set the ALDA back to standard
- set the PLA (29) back to standard
Then
- 1 turn CCW extra on 25
- 1,5 turn CCW on 28
- 2 turns CCW on 50
- 1 turn CW on 23
- idle set at 850 rpm. with PLA
Total:
- ALDA standard
- 23 1 turn CW
- 25 1,75 turn CCW
- 28 1,5 turn CCW
- 50 2 turn CW
The proof of the driving:
- No need for extra throttle to pull away; just let the clutch come up smootly and it will drive off.
- It happily ambles along at 850 rpm in third and will accept carefull acceleration and at 1500 rpm you can put your foot down.
- It will pull strongly and constantly from 2500 to 4200, then tails off to the max of 4500 rpm.
I have not done accurate, proper 1/4 mile timings but a few q&d runs put roughly 135 km/h as terminal speed.
The accelerometer app on a friend´s phone says 175 bhp., but I haven´t got a clue what it is programmed to calculate; at the crank, at the wheels or what???
Whether those numbers are about right does not realy matter though as the proof of the car is in the driving and it dives gréat.
Thanks for reading.
Petrus