Hey guys wanted to get some input on my current tune. I just got my 2000 s2000 with SOS running 10+ psi. It's running a 1200 with a 3.4" pulley which is supposed to be 15.5psi from SOS chart, but since we are at altitude it's supposed to be making ~12psi.

We got the car set up on AEM infinity and I made 367whp. On first pull it was only producing 3 psi. I thought it may have been hose clamps or the new tial BoV since belt tension I thought was enough by feel so I swapped to the stock Bosch BOV.

Turns out the belt was slipping on and off (wasn't aware at the time) during the tune and the tuner said it hit 10psi on the gauge and 6psi in the ecu. When I drove home I notice it would slip at 5 psi, and slip again at 7psi and never make more than 7 psi. Got home, tightened the belt and made 10+ psi no problem.

The tuner said since the Infinity is VE based, i should be fine without a retune even if it hits 12psi like I expected. Is this a true statement? Also the target AFRs on the tune are 12.24 at boost. Is this too lean? Thanks!

 

log it, send log to tuner. faster more accurate safer than blind internet opinions

 

Thats a bit lean for 93 pump AFRs. Aggressive would be a better way to put it.

The infinity can make its own adjustments using its sensors, so if the tuner mapped it all the way past 30 psi then you can turn up the boost all you want and the infinity will perform flawlessly.

 

Is this lean spike at vtec normal? Its shown 13.68 in the datalog below. I cranked up the VE table quite a bit but still have a spike here.

 

Thanks to Ap1chief the lean spike issue is all sorted out Also running a more safe target 11.8 air fuel ratio.

 

No excuse not being able to solve a fuel issue like that. If you read at all you'd find that aem infinity GIVES you a recommended VE (called NEW VE). All you have to do is log your VE and NEW VE and the value is given to you, all you have to do is plug in the NEW VE value, doesn't get any more simple than that

 

go troll somewhere else. If you had ANY experience in the matter you'd know that the newVE channel does not come preloaded and the expression has to be written. The math for that is somewhat simple but if he were running a flex fuel tune the formula for determining newVE would be much more complicated

 

Charper your confusing yourself. Read the manual. There is NO math or calculations to run. VE represents all the math and formulas to arrive at volumetric efficiency number in relation to engine displacement and load. Its dummy proof. As for flex fuel obviously youve never touched the infinity ecu because you would know there are no ve tables for e85! It is automatically converted from the original VE table to the amount of ethanol content in the fuel at the time. You need to get some sleep and take baby steps, no need to be burning up your calculator with aem infinity are you a tuner trying to confuse people into paying you for simple things like setting up a VE table?

 

 

There you go jdmz, this VE table is rock solid. In fact if you compare it to your current table you will find its very similar. Charper throw up a pic of tour ve table and maybe ill fix it for you before you melt another engine. But only if your nice.