Hi All, I'm a new member looking for my first 9000 turbo. An ex pro freelance mechanic, LPG (gas) qualified and have had many cars but not a 9000 turbo. Looking at a 2.3 LPT auto. I will be converting it to LPG which means it will effectively be running on racing fuel, about 105 octane. Normally that means it's pretty impossible to get detonation or pinking, usually to get the best from the engine about 12 to 15 to 1 compression would be required and another 5 to 10 degrees static advance. This got me thinking. When on gas, due to the nature of the fuel detonation isn't likely to be a problem. So the normal reasons for keeping the apc don't apply. What would happen if I disconnected the boost sensor on the car so that it always gave an ambiant pressure reading. Keep the knock sensor and ecu standard, then adjust the wastegate to give around 1 bar boost. According to my theory the ecu wouldn't know that the turbo was boosting over standard and so wouldn't interfear with it. If pinking occured due to ignition timing too advanced it would automatically retard it still due to the knock sensor and because the ecu would think there was no boost it would be setting the ignition timing very advanced (it retards it as boost increases to stop pinking) which is what I would need to make the LPG run right. Anyone spot any holes in this plan? Let me know please! Greg. [email protected]
