Hey Guys,
What are the acceptable (meaning safe) AFR, EGT & Boost gauge "range" readings for the TN kit at idle, cruising speed, acceleration, WOT & deceleration? BTW, this is with stock internals.
Thanks,
Jeff

 

It all depends on car and gas used but typically:

Cruise under vacuum AFR could be from 13-12 EGT depends on where yours is but mine is between 600-800

Under boost AFR should be 12s at 1 PSI dropping to 11s or 10s quickly. EGT Typically from 750-1200 depending on where your probe is.

 

at 8psi with my mods, the a/f is either 10.8 or 11:1 solidly. Vac at idle is close to 25, and cruise is totally dependent on your throttle position.

 

A/F sorta varies but we all try to keep in the same area of low-mid 11's WOT, out of boost mid-high 14's sometimes into the low 15's depends cause it is jumpy. EGT also depends, like were the probe is placed though I seem to be in the areas of where MIAPLAYA and Chimmike have stated.

 

+1 For the AFR on my TN Z. no EGT on my set up.

 

My AFR starts at 11 @ WOT and climbs to 11.8 quickly and stays spot on there.

 

My AFR goes from 14-17++ when decelerating & 14-15 on cruise. At WOT it is at 10.5. Is that within normal guidelines? Also, what should it be at idle? THANKS ALL!!!

 

When you decelerate its not uncommon to go lean. When the BOV opens you are exeplling all the air in the intake tract and therefore no fuel is added. Idle should be 14.7:1 steady with occasional jumps into the 15s. Everything sounds fine to me.