2G Stock Fuel System-Camshafts and 14b

[garrettgoines]

Start: yes, I did search. Could not find this specific scenario. I am in the process of installing a few things on my 2G TSi and was just looking for some input as far as what you personally would feel comfortable pushing the stock injectors/tune to. I know it is almost pointless to have cams with a 14B turbo. The reason I am putting them on is 1. I am doing my timing belt right now. 2. I plan to install them in the future. 3. I love the sound. I am putting on a 14b (w/7cm exhaust housing), 190lph Walbro, catless downpipe, FMIC and just a filter intake at the same time. I will also port the 02 housing likley. My question is for someone that has had a similar setup/someone that knows more about the flow of these with cams on them. I am just wondering what I could safely push the turbo to without leaning out until I can get link/injectors on the car. I know its not in the right place, I couldn't post it in the correct spot for some reason. I was thinking around 14psi would be all I could throw at it with those cams on without throwing the air/fuel fatio too out.

 

[reddragon1]

You will need more fuel.

 

[daren_p]

There is really no way to be 100% sure, unless you have something such as link to monitor your specific setup but if I had to guess, I'd say your probably fairly close with a 14psi guess.

With stock cams, I ran an evoIII up to 15.5 psi, running link to monitor. For the stock (ie rich) fuel map, the ecu was asking for up to 107% IDC (injector duty cycle), obviously you can't inject more then 100% but since the stock fuel maps are so rich, it still wasn't quite enough for the car to lean out to much & knock. I would think a 14B with cams would be similar, defently would want to keep it under 15psi if you have no way to monitor your setup.

 

[garrettgoines]

That is exactly what I wanted to know. Its not that I am not getting somehting to tune the car with ever, just dont have the $500+ right this moment and need to be able to drive my car. I apprecieate the help! I will likley keep it at wastegate pressure but I was just wanting to know in case. Again, thank you.