a MAF too small

[Dave Zug]

Heres a brief intro to my project, for those new:

I have an 89 5.7l Iroc, 165 ECM, ARAP (vette) binary. I have put a 
supercharger on it and the computer has no idea what airflow is 
coming in after about 3000 rpm cause the MAF reads 255 right about 
there.

The definite solution is to go to a MAP system. I dont want to hack 
the wiring apart and have to use a binary that I'm not skilled enough 
at to tune from scratch.

Heres my thoughts as to a solution to the MAF max problem: 

If I drill holes PAST the maf sensor, effectively forcing it to 
read 75% of the actual air entering the engine.. I can alter the MAF 
tables to re-compensate. If it works, I can wrap foam around the 
holes and lube with K&N oil for now.. until I can get a pipe made.

Voila.. don't have to buy a twin MAF, dont have to use a translator, 
don't have to go to a MAP system. only trouble is at idle, the
resolution might make idle quality suffer. If (there should be) 
there is a fairly linear relationship between volume thru the 
sensor and unmeasured volume into the "post sensor holes" or larger 
single  "post sensor hole", it should work.  one snag is the 
difference between the filter restrictions but it may be neglidgable 
enough to tweak the MAF values at WOT manually using an EGT or O2..


Am I missing an easier solution? Do I even really care what's going 
on at WOT above 3000 rpm?  I MAY max the MAF at 70% TPS and 3500 rpm 
so my thinking is I DO care.

I have a few more days and I'll have the alum heads, 28# 
Buick GN injectors (12.7 ohms (??)) and new fuel pump on so the 
problem is about to get worse.  PS I blew the head gasket probably 
from being lean so my mission is that much more critical now with 
1200$ heads to warp 8-(

Dave Z. www.delanet.com/~tgp