I need help I have takeda CAI, eBay test pipes and y pipe(combo) and muffler delete. I was wondering it a z1 intake manifold would do me any help, or if the eBay parts are even helping

 

Well Ebay parts are same as brands like top one prospeed

 

So do they help? I do feel like a faster response or it might just be me cause the money I spent

 

A lot of intake/exhaust parts may gain at high rpms but take away from the low end where the G is already lacking. If you spend a lot of time driving over 3k rpm to WOT then yeah, the ebay test pipes and CAI are probably helping, but in typical daily driving type scenarios you're probably losing performance.

 

@alwx do you till have this setup? Tp, ypipe and muffler delete?

 

Gonna need a tune to get the proper gains from any bolt on parts.