Tuning and idc's questions and issues Help

[DJ23GSX]

This morning (33* outside temp) i made a 2nd gear pull and i saw 0 knock @ 20psi but my idc's hit 104%.
About 5 minutes later i made another 2nd gear pull without changing anything on the safc and my idc's sky rocketed up to 121% but there was still 0 knock. I leaned out the safc a few % till i saw knock but my idc's barely came down at all.

What things would cause this drastic change in idc's when nothing tuning wise was touched?

My fuel mods are:

evo 560's with base fp set @48psi rewired walbro 255 aeromotive afpr 2g maf and these issues are at 20psi on a s16g with a supra sidemount i/c

Why am i maxing out the 560's on only a s16g even with my base fp @48psi? Why do i need all this fuel?

Thanks

 

[kenamond]

Why am i maxing out the 560's on only a s16g even with my base fp @48psi? Why do i need all this fuel?

Boost leak?

 

[DJ23GSX]

A Boost leak test will be done in the next few days.


I did some more tuning today after work with the temps outside being 65* and i was able to lean out the safc quite a bit and still have 0 knock and got my idc's down around 90% on a 3rd gear pull but after 3-4 3rd gear pulls i heatsoaked the supra sidemount and couldn't tune out the knock.

I have a set of 650's but i am not sure i should be needing all this fuel for my setup.