Just added Yoshimura R-77 Titanium slip ons (not an easy challenge) and a K&N air filter to my 2007 ZX-14.
Do I need to get the ECU remapped for these additives or am I okay and all is still good?
I am concerned the bike will run lean with the changes and that's the last thing I want...
Thanks and Regards,
Location: Wilmington, Nc.. building fantastical shit
honestly, it may be SLIGHTLY lean, but not enough to really worry. its never a bad move to get it dynod and have AFR sampled to determine how far off lambda you actually are. a good shop will pop a hold in the collector and weld an O2 bung there to sniff the exhaust.. a shitty setup to be wary of is a vacuum-based sniffer that goes in the tailpipe..
usually in most cases you won't see a huge deflection in AFR with a slip on and better filter. the changes in air flow can also be perceived by the MAP sensor on the airbox and injector PWM is then automatically compensated, anyway.
if you're really concerned, gather EGTs and see if they're above or below 1380*F.. if they're WAY below, then you need to get AFR corrected for sure.. you can be lean OR rich and be over 1400* as well. EGT in relation to AFR operates on a bellcurve with an exponential rise and fall towards and from the target temp.
overall, you're most probably fine with what ya got.
►Sept09 B.O.T.M. winner◄
Originally Posted by RacinJason44
Never lick a hooker in the coin purse.
Originally Posted by nizzmister
Bike pulls real hard and smooth, kinda like Supra's mom, but without the regret
Thanks for the response.
I'm not interested in changing any performance characteristics or chasing more HP. I don't drag or race but do quite a bit of "spirited" touring and the bike is plenty fast enough for me.
With the new slip ons and air filter I just wanted to make sure the bike wasn't leaned to an extent that the engine was at risk of damage over time.
The bike runs great with the changes and doesn't over heat so looks like all is good.