Hauntingly familar secondary failure #3 - ZR-1 Net Registry Forums

4-cam · 01-14-2014

I removed the secondarys about two years ago while I was porting my top end after reading a thread about the screws and engine damage that can occur. There was no way I was going to let that happen to me. I have corys chip for secondary delete and my 91 passed the IM240 treadmill test here in Colorado with flyin colors. Im not as confident on how its going to do with the SW headers and high flow cats that I am installing now. I did add air tubes and will be ceramic coating headers and cats to keep them nice and hot. I am going to do an emmisions test before we start the tune to see what a difference high flow cats make. Hopefully she will pass without issues.

01-14-2014	#19
4-cam Join Date: Feb 2010 Location: Arvada Colorado Posts: 192	Re: Hauntingly familar secondary failure #3 I removed the secondarys about two years ago while I was porting my top end after reading a thread about the screws and engine damage that can occur. There was no way I was going to let that happen to me. I have corys chip for secondary delete and my 91 passed the IM240 treadmill test here in Colorado with flyin colors. Im not as confident on how its going to do with the SW headers and high flow cats that I am installing now. I did add air tubes and will be ceramic coating headers and cats to keep them nice and hot. I am going to do an emmisions test before we start the tune to see what a difference high flow cats make. Hopefully she will pass without issues.