986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - First thing to do to get more HP to 99 Boxster?

Xpit77 · 11-19-2015, 03:53 AM

My 99 tip came with a CAI that the PO did ? Basically cut the intake tube and stuck a KN on it. Amazingly it didn`t affect the MAF. I changed the filter and installed an Injen heat shield. When I had the IMS done at Mantis in Oakville I had them install one of their underdrive pulleys. It`s a 5" so same belt and very little effect on the p/s. I also installed a set of OBX headers. It does pull better but I find lags a tiny bit a low rpm but once its over 3 it really starts to pull and sounds great. My 99 has two cats without a bypass .:dance:

11-19-2015, 03:53 AM	#10
Xpit77 Registered User Join Date: Jul 2014 Location: Canada Posts: 487	My 99 tip came with a CAI that the PO did ? Basically cut the intake tube and stuck a KN on it. Amazingly it didn`t affect the MAF. I changed the filter and installed an Injen heat shield. When I had the IMS done at Mantis in Oakville I had them install one of their underdrive pulleys. It`s a 5" so same belt and very little effect on the p/s. I also installed a set of OBX headers. It does pull better but I find lags a tiny bit a low rpm but once its over 3 it really starts to pull and sounds great. My 99 has two cats without a bypass .:dance: __________________ 99 Boxster sold 88 944S sold Xpit Formula Four sold 95 Integra Solo I sold 71 Opel GT sold