jreask

I noticed this AM that there is moisture from my exhaust right at start up. Not just a little. It is spitting , almost like raining out the tail pipes. I guess it could be normal?

Also, I have been reading some rumors that Brenspeed's tunes are dangerously close to being too lean. Can someone comment on that? I don't really understand the whole lean/rich thing.

Thanks in advance.

JR

Nuke

The moisture from the exhaust, especially after sitting overnight, is normal.

I wouldn't worry about running lean unless you're throwing a CEL.

GAP

You can accumulate a lot of condensation in the exhaust. It's normal like said above. My brenspeed tune was rich. Mine was 12.7ish so I leaned it out some.

2007VistaBlueGT

Moisture is good, It's a byproduct of complete burn when water comes out of your tail pipe it means your combustion is very complete, the reason fo excess in the morning is the cold exhaust pipes

VistaGT

Brenspeed does run a bit leaner than other tuners do but it's in no way dangerously lean or something you should worry about. I must be the king of research on this haha. I was worried about the same thing-being too lean. I've talked to as many tuners of S197s that I could find. Actually it's more about timing and detonation than it is about the A/F Ratio.

Ex: As long as there's low timing and no detonation, you could be fine driving around in the 14s. As a rule of thumb 13.3 is about as lean as you want for power. After that it loses power and isn't ideal but not deadly.

This is based off the S197. I've talked to everyone I could find. You name it I've probably had a LONG chat with them lol.

Also, like everyone else said-don't worry about the moisture it's normal.