1.8t conversion. suspension and other bits

[Dan_GTi8v]

OK, I get what everyone is saying, and I would like to run a knock sensor if I could, but I kinda feel like I'm repeating myself as I've already asked in here a few times but all I get is 'run a knock sensor'

What would I need to do if I wanted to run the 1.8t management, or what other options do I have other than running QPEng management, bearing in mind I know next to nothing about the electronics side of the engines (pretty much all I know is what LL has told me and that I need to 'run a knock sensor')

[Dan_GTi8v]

Anyone done a conversion and not used qpeng?

[Wayne]

http://www.golfgtiforum.co.uk/index.php?topic=26874.0

http://www.golfgtiforum.co.uk/index.php?topic=124485.0

[Dan_GTi8v]

Cheers wayne, but I've read all that before and its all a bit too vauge. All the detailed info is from people who used QPEng

I've read somewhere that the QPEng 3 bar map sensor is enough protection, but was from a 2005 thread and I know very little about turbos and engine electronics. Is this correct?

[Dan_GTi8v]

it all depends on the mapping at the end of the day, if its mapped properly then the lack of sensors is hardly gonna come into it.

without knock control from an oem ecu the spark will have to be knocked back slightly do a definite safe point rather than whack in the spark and let the ecu handle it. this has advantages and disadvantages. your running less sensors yes, but then thres less to go wrong, if one of your knock sensors goes, youll get plenty of det, if qpeng is mapped at as safe point in the first place, you will not experience det if sensors fail.

Is this true?

[Wayne]

it all depends on the mapping at the end of the day, if its mapped properly then the lack of sensors is hardly gonna come into it.

without knock control from an oem ecu the spark will have to be knocked back slightly do a definite safe point rather than whack in the spark and let the ecu handle it. this has advantages and disadvantages. your running less sensors yes, but then thres less to go wrong, if one of your knock sensors goes, youll get plenty of det, if qpeng is mapped at as safe point in the first place, you will not experience det if sensors fail.

Is this true?

Yes to a point however it is not a risk I would be willing to take.

[della_mk3]

lmao at another knock sensor agument,  just run qpeng. they wouldnt make it if it wasnt safe

[Wayne]

lmao at another knock sensor agument,  just run qpeng. they wouldnt make it if it wasnt safe

You run a very big risk of a melted piston not running one.

[Dan_GTi8v]

I've spoken to ben at qpeng about it and he's assured me its as safe as running a system designed to use a knock sensor. I agree that not running a knock sensor on a system thats designed for one is a bit silly, but the whole qpeng system is designed around not running one and so detonation is highly unlikely. About as likely as running a sensor on a normal system and it failing

I may be taking his word for it, but I dont think qpeng would have the rep it has and see so many people using it if this was a real problem

[AudiA8Quattro]

The knock sensor is a safety net, you could run it without and it could be fine, but depends how tuned the engine is, or how much advance on the spark you want to run.
Surely by removing the knock sensor, you will limit the spark timing advance?
Will that not limit the engine power?