Hi all,
So today I took my B4 to S&J Automotive in SA for a minor service and ecutek type 3 tune. I was incredibly excited at the prospect of 30kW of extra power and better responsiveness/fuel economy and couldn't wait til it was done so I could have a nice drive. Part way through the tune apparently the power curve readouts weren't coming out right. After getting the power tuned up by 30kW, in each subsequent power run the power decreased each time by about 5kW until the guy started to hear the knocking noise which he said would be a con rod bearing. The engine was shut off almost immediately after the sound was heard, and until taking it to get tuned I have not once heard a similar sound come from my engine.
The tune and the service together come to around $1800 and I have saved months to be able to afford this. Apparently now I am up for $3k to get the bearing replaced, and they said that was doing it as cheap as they can. I called my other mechanic who mentioned that it can be replaced or I could try and purchase a new short block and have it fitted.
I'm stuck in a bit of a dilemma as the B4 was my daily drive, so I can't afford to have it off the road for too long. If anyone could give any advice on what I should do in this situation I would very, very much appreciate it! Keep in mind that I'm on part-time wages and can't afford to break the bank, but that I still want to do enough to significantly reduce the risk of anything similar occurring in future.
The way I see it:
1. Bearing replacement - Possibly more affordable, could uncover other problems in the bottom end that will need repairing at the same time which may raise the cost.
2. New short block - I'm guessing pricier but would avoid discovering any additional problems when trying to repair the bearing (less risk involved).
TL;DR - Took car for tune, tuning brought out knock sound (said to be a con rod bearing), haven't heard sound before the tune, need to know what to do now.
Thanks for reading and I look forward to any suggestions!