1990 Pioneer 4x4 Posted June 23, 2008 Share Posted June 23, 2008 Has anyone had any problems when they installed a header for their 4.0? I was thinking about getting a Edelbrock Shorty Header and was wondering if their would be enough back pressure. Link to comment Share on other sites More sharing options...
summerinmaine Posted June 23, 2008 Share Posted June 23, 2008 Has anyone had any problems when they installed a header for their 4.0? I was thinking about getting a Edelbrock Shorty Header and was wondering if their would be enough back pressure. If the rest of your exhaust system is stock, I'm not sure why the header would affect the back pressure. :???: Link to comment Share on other sites More sharing options...
BLHTAZ Posted June 23, 2008 Share Posted June 23, 2008 You will be fine as long as you don't open the whole system up with a large diameter pipe all the way back. Link to comment Share on other sites More sharing options...
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