Originally Posted by
Tauror
I took my car to the dyno, and on the high end it showed the car was running lean. 16 to be exact. so I told Jerry from Eurocharged, if I could get a retune to fix that and he said "The commanded AFR cannot be maintained due to a lack of fuel. Most customers are installing the 550cc injectors to fix this issue." so I got bigger injectors.
When I had the Graphite 6, with the 181 pulley it was also leaning out. The fix was to raise the fuel pressure with a larger pump, and adjustable regulator from Needswings I never needed to change injectors....... I was seeing 18-19 psi of boost.
As someone else stated, if you list your mods, it is easier for people to help.............