I made an itb for my beater car but its waaay rich at idle. Does this mean the engine is not getting enough air at idle or the vacuum on map is not strong enough?

 

Holy ---- man, looks good.

Try finding a better vac source for the mpa (Brake Booster) and see if that helps. That looks really damn sick. Do you have a writeup at all for it? Thanks

 

This is a big reason why alot of people have gone away from them. If your motor runs a map sensor the signal isnt gonna close to what a throttle body will create. A vacuum manifold may also help. Check tunertoys.com golden eagle section

 

I just made me a vacuum manifold from spare T"s and hoses. I'll install it tomorrow and see if it works

 

I dont have a write up its straight forward. The most difficult part is fabricating the throttle and auto trans. cable bracket. I made it from flat steel bars. And make a vacuum manifold coming from each tb and don't just stick the sensor in a single tb. ( I learned it the hard way)

 

it should help a little but the ones I have run on stock honda ecu's just didnt cut it. Just ran very rich. Vtec was very loud though

 

how bout hacking the signal voltage from the map or lowring the return fuel line pressure regulator?

 

Tried the fpr lowering it ran worse at wot it didnt like 32 psi


I mean it ran ok just wasnt any faster due to the afr

 

I made the manifold, but still no luck getting it to idle correctly. This project is harder than I thought.

 

Is it idling smooth just rich?



Is there ecu chipping for your model car?