I have a 87 4runner with 22re.. i have put the street sv head and crawler cam... i have just got a header for it but have yet to put it on.... im having some power loss with regular gas but when i run Injector cleaner in it or mid grade gas i no longer have the sluglish proablem.. i went form 23mpg when i had the head put on to now about 17. i have tweeked the air flow sencer a little and had that power gain but now i have lost that gain.

what can i do to fix the problem with powerloss and mpg loss?

 

Timing? I usually get around 15-17 with my 4runner on 35's with dual cases and I've got that same cam and a NWOR header.

 

Check your timing, or call engine builder and ask what he recommends for timing with the head, cam, and header installed. It would also be a good idea to run at least mid grade gas with your new set up.

 

how do you guys like the 261? wanting to put one in my 22r very soon but can you feel a noticable difference?