would an EGR block off increase throttle response...

[manwithaGSX]

the egr system has been throwing a cell for sometime now, so i decided to block it off. i removed and blocked off the associated vacuum lines but left the temp sensor in(yes it has cali emissions). when i drove around the block after warming it up i noticed the throttle response increase quite a bit. could it be because my egr valve was stuck open? i removed the battery when i worked on this so it reset the ecu. does the ecu have a "learn mode" that it has to go through first? also the turbo seemed to spool a little faster. i removed the egr lines but i made sure the purge control is still connected and replaced any left over t fittings with a straight fittings, and the fuel regulator lines are still connected.

 

[K_Hill]

well, since blocking it off actually made the turbo spool up faster and have better throttle response then yes to your question. So blocking off the egr valve is the only thing you did to your car while you was working on it?

 

[manwithaGSX]

well, everything I've read so far in the tech articles and forums have been saying that blocking off the EGR will only keep carbon out my intake and engine, and that there is no performance advantage in doing this. so...could and EGR valve that is stuck open hinder performance?

 

[DSM90AWD]

The EGR is designed to operate only when the engine is warm and under vaccume. If the EGR is stuck open, then yes you will have a problem with performance as this exhaust has trace amounts of oxygen left in it which is not being counted by the MAS which under under open loop (no O2-feedback) will cause the engine to run leaner