b16f to b18e, ecu problem - help needed

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Zeljko_M
480 Newbie
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Joined: Sat Dec 05, 2009 10:09 am
Location: Rijeka, Croatia

b16f to b18e, ecu problem - help needed

Post by Zeljko_M » Tue Feb 02, 2010 2:09 pm

Hi guys,
I have rebuilt B18EP engine (from 480es 1992) and installed it in my 440 (B16F 1995). I'd like to keep all the old wiring because the instalation is almost the same. The only difference is that I am using throttle body potentiometer instead throttle switch. The ECU in the car is from B16F engine, it is running on 27C256 EEPROM and MC68HCP11A1VFN processor. Now I want to extract the maps from the B18EP ECU to the newer B16F ECU. Can someone provide me with some guidelines on how to find the map and it size. I already have removed EEPROMs, and read their hex.
I have tried to start the car with the B18EP ecu but it would not start. The problem could be the pin 23 which is connected to CEM (C4) in 480 but in my 440 installation it is not connected anywhere. The throttle body on 480 had a throttle switch, but I am running it on 55mm throttle body with potentiometer.
And the third difference is pin 29 which is connected to ground on B16F installation, but not connected on B18EP ecu.

Do you have any suggestions up on this problem?

The other modifications to newly build B18EP engine are: ported and polished head, installed lighter fly wheal (from F7P engine), shorter diff in a gearbox...
Zeljko_M
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V480TI
480 Expert
Posts: 668
Joined: Sun Dec 08, 2002 7:13 pm
Location: Helmond, birthplace of the 480

Re: b16f to b18e, ecu problem - help needed

Post by V480TI » Sat Feb 06, 2010 6:01 pm

Maybe the flywheel causes the problem ?
Does that flywheel have the same amount of teeth as the original one ?

Greetz
Flamered GT-Turbo 09-1995, Yellow Koni's, Intrax springs,Palm Beach,rear speakers,middle arm rest,Roboumod,Vega's, CT 906 radio/cd with 850 R amplifier, Pioneer speakers allround.
Hausser front and rear bumper, Black Diamond sport clutch, lightened flywheel, flowed head.Audi TT recirc.Stainless Cat replacement, K&N airfilter,Magnecor KV85,NGK colder plugs.
Soon ; Audi/VW calippers, 280mm Renault Sport brake discs and Ferodo DS2500 pads.

New project : 1987 Silver 480 with B18E engine
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Ettore Bugatti
480 Is my middle name
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Re: b16f to b18e, ecu problem - help needed

Post by Ettore Bugatti » Mon Feb 08, 2010 1:08 pm

Doesn't the engine run on B16F wiring loom, B16F ECU and b16F electric parts (injectors, throttle body, sensors etc.)?

There is as far as I know no Bin editors for the renix/fenix ecu.
Volvo 480 ES, chassis 283, dec 1999-aug 2005
Nissan Micra 1.0 Nismo, feb 2006-
Rover Mini 1000, june 2009-
Peugeot 106 1.4 Roland Garros, oct 2011-
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Zeljko_M
480 Newbie
Posts: 10
Joined: Sat Dec 05, 2009 10:09 am
Location: Rijeka, Croatia

Re: b16f to b18e, ecu problem - help needed

Post by Zeljko_M » Fri Sep 10, 2010 7:14 pm

Hi guys, sorry for late replay...
Ettore Bugatti wrote:Doesn't the engine run on B16F wiring loom, B16F ECU and b16F electric parts (injectors, throttle body, sensors etc.)?
There is as far as I know no Bin editors for the renix/fenix ecu.
The engine does run on b16f ecu, but there is desire for better performance... you know what I mean!
All sensors are identical, fuel injectors are identical. I am running 3.5bar fuel pump (1 bar original).
V480TI wrote:Maybe the flywheel causes the problem ?
Does that flywheel have the same amount of teeth as the original one ?
Greetz
The B16F and B18EP have the same flywheel. I am using one out of F7P engine (renault clio 1.8 16V) which is about one kg lighter!
It also has the same tooth configuration.

I'll get back soon,
job is calling....
Zeljko_M
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