we'll im finally making some boost, but i found an exhaust leak on my external wastegate flange. can i just go ahead and weld this while the headers attached to my car or will this damage any electronics (i read somewhere it did??) .......thanks guys

Unplug the battery and I think youre pretty safe. Keeping the ground lead as close to what you weld is important too.

Arc welding or gas welding??

 

If you're arc welding, isolate the computer completely. It's a computer!

i was mig welding...i went ahead and did it anyways, it didnt hurt anything!!

I've been doing quite a bit of mig welding on my car lately.. yeah.. disconnect the battery and your good..

 

rllywgn

a battery disconect is the right thing to do. they alo sell system protectors that just clamp onto the batt terminals. I think its just a big capacitor really.

 

I have to admit I have mig welded on my car many times without protecting the ECM and have had no problems.