CyCloNe!

Hey guys I was wondering how much the stock 951 engine can handle as far as hp with correct fuel/air management?

Darwantae951

Do a search. This has been talked about many times and there are many differing opinions as well as many different factors.

Potomac-Greg

I run my n/a at 1.0 bar. So far so good. ;-)

toddk911

Define stock. All stock parts or stock internals with a bunch of supporting bolt ons?

BONE stock 15psi on pump more on higher octane.

Bigger turbo, etc. etc. 18-20 on pump and 20+ with enough octane.

Stephencs601

I am running at 15 lbs for now. Had to adj my FQS to third position and now am putting 72lb injectors. I needed to increase the fuel to the engine. I was running a bit lean, so all the mods I have done corrected that problem. I can now(saturday) pump my boost upto 20lbs. I have modified the motor, especially the head gasket to hold this boost.

CyCloNe!

I was thinking stock internals and gaskets with 93 octane... any bolts doesn't matter, just curious how much the engine can take

86 951 Driver

You upped thet boost without changing out the chips at all?

luftpirate

My guess by FQS he means a potentiometer in the DME that modifies spark maps. You could adjust it based on what octane fuel your running (Might be there so you can adjust cars per region). If you are running higher boost on stock chips and hitting a lean condition, you can retard spark to eliminate knock. Not something you want to do though without a wideband.