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Old 24-07-2004, 08:59   #1
prova355
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max boost for standard ecu with avc-r

i believe the max standard boost for the ecu in a evo vi is around 1.3 bar, BUT if i put an avc-r in will the standard ecu still limit the boost regardless of what the avc-r is set to? or is this a scenario where a ralliart of the like ecu is required in conjuction with a bigger fuel pump?
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Old 24-07-2004, 09:11   #2
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Re: max boost for standard ecu with avc-r

Quote:
Originally posted by prova355
i believe the max standard boost for the ecu in a evo vi is around 1.3 bar
The max boost is dependent on atmospheric conditions at the time but is generally considered to be around the 1.3 bar point, above that you will experience fuel cuts as the ECU senses the overboost.
Quote:
BUT if i put an avc-r in will the standard ecu still limit the boost regardless of what the avc-r is set to?
The ECU will not limit the boost the AVCR will replace the standard boost control system, if you set the boost above 1.2-1.3 bar the car will fuel cut.

To get around the fuel cut you need an aftermarket ECU such as the 'plug & play' Ralliart ECU / Power Engineering Remap. These have the fuel cut code removed and you will be able to run more boost. However you need to ensure you have adequate fueling for the extra boost, its a good idea to uprate the fuel pump (can be had for <£100) and get the air/fuel ratio checked to ensure the car is not running lean.
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Old 24-07-2004, 11:13   #3
prova355
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thanks, can you recommend any sites to well known and tested fuel pumps?
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Old 24-07-2004, 14:41   #4
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Quote:
Originally posted by prova355
thanks, can you recommend any sites to well known and tested fuel pumps?
Do a search on the forum for the Walbro GSS342, this is a 255 ltr/hr pump (standard V/VI pump is 150 ltr/hr) you can get it from the USA for well under £100 delivered to your door. There are loads of members on this forum (including myself) with these fitted.
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