Boost problem

[igor136]

IMO what you've just described is a boost leak. IF you're confident there isn't one, however I would go back to basics. Check plugs for decent spark at each plug, change fuel filter, clean MAF and its connection, and make sure the fuel pump is operating correctly (check for good earth and good voltage). My old Pulsar ran like a dog until I eventually got it on the rollers and found out the injectors were blocked. Sometimes its the things you least expect to be at fault! Good luck

Good idea, thanks.

[igor136]

Injectors are OK. Lambda is new.
I found a large crack in the exhaust manifold of the engine. Could this be the reason my nightmare?

[UrS4boy]

I found a large crack in the exhaust manifold of the engine. Could this be the reason my nightmare?

No very likely unless it was the size of Wales.

[igor136]

At the end of the book has an interesting text.

http://www.s2-audi.co.uk/workshop/aan/aan.pdf

[igor136]

I tried another ECU, 551AA. Now I have 2.1 bar on display, sometimes 2.2. Is it OK because the car is not much faster? Or I'm imagining