Volvo 480 Club Europe

Hola I have a Renault with engine b18ft, and have a problem that cuts me nose if for on pressure or nose, and mounted a major turbo and the turbo I it cannot lower less than 1 bars pressure and queria know if Haver can help me since I can solve it or as podria remove constrainer ECU a greeting i thank you

https://www.youtube.com/watch?v=pX1Zwit ... e=youtu.be

To comment also that and proven pipe of the disconnected MAP and it works perfectly cuts not anything

Looks like you're hitting boost cut.

Is the engine running on the standard Volvo ECU? Is it modified in anyway?

What turbo is the engine running??

hello if the standard ecu, the little bigger than a t25 turbo

Are you running a manual boost controller?
Like a bleed valve?

The standard ecu cannot handle boost more than around 0.75 - 0.8bar. It can't calculate ignition advance, so cuts the boost.

Some of us run modified boost/ignition ecus allowing us to run to around 1bar, but that's about the limit as the fuel ecu can't be modified to suit and doesn't have maps for the extra fuel needed.

I'm looking at running a T25g, but unless I can find a way of controlling the extra fuel, there's no real advantage over the standard T2 apart from possibly flowing a little cooler.
Bigger injectors won't necessarily work on their own, because it would just run too rich at idle.

Steve

hello this moron the turbo wastegate to 0.9bars to 1 bar, the problem is that it kiero kitarle limiter but nose how to do it on the turbo is a gt2056 and it works great the only thing that does not come down from that pressures

How reliable is the boost guage?

It does sound like it's pushing more than 0.7 bar when you lift the throttle.

Are you running an external dump valve?
These ecus don't really like them, as they can't calculate air volume properly without the standard recirculating dump valve.

Also, the standard recirculating valves are rubbish, much better with a VW 710 valve.

Something to check is the boost control solenoid, if this isn't working properly it will cause over boost, as it can't control the wastegate.

Hello, not I do not go external dump valve have a filter because of it it sounds asin, on the standard recirculating valves I do not take this one annulled and what I want to know like takes constrainer from itself ecu flushedly, and seen an out resister but nose since I have to do it thank you very much for help

Where is the boost gauge connected to the engine? And where is the MAP sensor connected to the engine?
You can get a few PSI difference from straight after the turbo and after the intercooler, so perhaps the boost gauge is reading 0.7BAR but the ECU is reading 1.0BAR.

Hello again.. The MAP I it have admission connected to the collector, the problem I believe that it is necessary to to be a turbocharger it does not go down 1 bars and serious necessarily to remove constrainer ECU or resistance but nose since it is done, I leave him a photo motive OK a greeting

Really struggling to understand now...