Backfiring? under boost

[chet1185]

I don't know anything about this car yet. bought it as a fixer upper. 6 bolt swap, kiggly kit with 2g trans.

Just got it up and running. front and rear motor mounts are bad, motor flexes to firewall and ac pulley rubs frame. Just changed the front and it fixed it halfway, so I'm ordering the rear now. But to the issue here.....I'm assuming as the boost builds, the car backfires. If I slowly raise the rpm's while cruising it just takes a little longer to do it. It is the stock exhaust so it kinda sounds like a pop and the car jerks a little. Feels like the bakes are being hit on and off. Sometimes if I'm WOT, the rpm's go up smooth but other times its rough.

Only thing I did to the car was the stock boost controller mod. Don't know if it has a boost leak or anything which I'm sure I'll have to do before anything else. Spark plugs look brand new but I didn't check the gap on them. Read about fuel cut off but I don't know what that is exactly.

 

[Breezio69]

There are throttle body rebuild kits out there, pm snowborder714, he used to or still does sell kits.

 

[chet1185]

I cannot get the tb to stop leaking. I even doubled up on gaskets to try and stop it. Any suggestions? And now i have a whistling when giving throttle and leaving off.

I think i finally got it to stop backfiring. And its not from a boost leak. I bought new ngk wires and just put them on. Fixed!

Any suggestions on the TB leak?

 

[smills1840]

Where exactly is it leaking from? Internally, like the shaft seal? Or from where it mounts to the manifold?