Opening dump ?

[TurboTdr3.8]

I was wondering how much does the tune get off by opening the dump pipe , do you have 2 tunes one open and one closed through the exhaust . Please share your thoughts

 

[turbofabricator]

Depends on what exhaust you run.

 

[Grumpy]

like Ken said !!!! We have always gone threw the exhaust... to old and lazy to open it . wellll since the mid 90s.. early days we would open the stock exhaust up. 2/3 tenths. The cat "thingie" is one of the restrictions to !!

 

[TurboTdr3.8]

No cat here , I was wondering if holding back some exhaust helps keep boost up to a point instead of dumping and cause a lean condition or am I in left field .

 

[Bescurred]

I ran my car both with and without it open. Seemed to run the same either way.