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gambler87

L67 injectors on L32 motor IFR help

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Ok question. I am going to be upgrading to 42# injectors, they have the older style clips. I got a set of clips and a known good set of older 97-03 L67 injectors. I soldered and heat shrunk the clips on and put in the older style injectors into my 04 comp g.

 

Now even using the 97-03 injector flow rate table or the 04 injector table I still see 10 to 1 afr on my wideband under quarter throttle. Any higher and it just pegs out super rich.

 

My question is has anyone else ever done this and got it to run good? And what should my injector table look like to make these work?

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I figured it all out on my own.

 

All this info came off of witchhunter.com which tests and meters fuel injectors

 

a555ce68e9c3f73b97b5fd4e87c0d245.jpg

This is their test of a new L67 injector tested at 43.5psi

3152bb8cd3ea24c8e33d024866fb3d43.jpg

This is their test of a new L32 injector tested at 43.5psi

ef4aa2747bc7f8217bc2bb75a750cb93.jpg

Then I had to take their test of cc/min and convert to lb/hr. For the L32 I got 33.3. For the L67 I got 33.7. This is using witchhunters conversion calculator

d57e5ed00b6ec54833c1c9dc19f81518.jpg

Then I had to convert the pressure readings in 60psi flow instead of 43.5psi taking into account the 04+ fuel pressure and non return system. I got 39.1 lb/hr at 60psi for L32, and 39.6 at 60psi for the L67.

 

Then I took 39.1 divided by 39.6 and got .987 which is 98.7%. Then took my stock IFR table for the 04 and multiplied it all by 98.7% and got my new table.

 

Car runs awesome now

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