So im thinking of buying the NWP spacers and vias block off plate or a cattman y-pipe. Which one will have the most performance gains?

Thanks

 

About the same. I'd do Y-Pipe since its 1/10th the work to put on.

 

If you are doing the install, then I say the IMS and block off plate.

If you do not have power tools, then the y-pipe will probably be a huge ***** to do, but the IMS and block off plate will just take time and patience.

Depends on whether you're doing the install and obviously how deep your pockets are ATM.

.02

 

Yes i will be doing the install and have air tools.

 

Y-Pipe took me 30 mins without power tools.

Spacers took me ~5 hours taking my time without power tools. Spacers also void your warranty I believe...

 

Well I tried doing the y-pipe with no power tools, and ended up stripping one nut and couldn't even get any of the other ones off...probably because they were previously tightened by "feel" with an air-gun when my tech took the sub-frame off...lol OPPS!

OP-If you have power tools, then this is cake for you!