With an Ls/Vtec Turbo motor do you have to get it tuned just to break it in? Or can you just break it in with a stock p28??

 

tuning is the essential part of the build , of corse you have to get it tuned.

 

You will rarely see a boosted motor running w/o a engine management system for a reason.

 

Well I mean, im not going to boost on it while im breaking it in and im not going to hit vtec thats for damn sure. I can't just drive it while shifting at 3rpm just to break it in? And then after words I will get it tuned with managment and wut not. Or do you have to get it to tuned just to break it in?

 

It'd probably be best if you went ahead and got it tuned before you broke it in, that way you'd know that everything was working properly and you'd have nothing too serious to worry about. Why start off the wrong way when you can start off the right way and avoid problems?

 

Tune it before break-in. This is a very important time.

I would actually turn the car on, tune the idle, shut it off and do a compression test. This way you can make sure all the cylinders are running the same pressure. Remember, a wide band is taking a mixture of the cylinders.

Tune it, break it in, compression test it again. Better you spend more time and money now than have to do another teardown in the very near future.

 

Now when you say tune it, do you mean tune it to whatever boost I want to push and the highest horsepower I am looking to get, because wouldn't that ruin a brand new motor to rev it that hard when it has 0 miles? Or do you mean just tune it so that its drivable?

 

Ive broken motors in both by ragging the hell out of them and by driving like grandma for 1,000 miles and neither made a damn bit of difference in the long run.