Air pump....Should I remove it? - ZR-1 Net Registry Forums

Vette73 · 03-08-2016

Every time I start my engine I have to hear this run, of course it shuts down around 10-20 seconds depends....

I guess you would call it the smog pump..I guess I can find it if I looked but where exactly is it located? Can I just remove it, or is there a kit I have to buy to replace it? I'm sure it's a horsepower robber, of course not a lot but, is it neccessry ?

Had the car dynoed today...Put down 382 RWHP at 7,000 RPM....Torque was anywhere from 347-350 rear wheel at 7,000..

Car does have a hic cup at 3,000 RPM when you lean into the throttle, slight, but you feel it....Mechanic could not feel it on the dyno....Fuel pressure was good and the tune seems fine...

The torque figures were a little erratic...My wires may need changing...They do look a little old but they are not factory ( car has 43,000 miles) Also going to swap out plugs.....Lets hope it clears the slight hic cup..

03-08-2016	#1
Vette73 Join Date: Nov 2014 Location: Brooklyn ny Posts: 1,044	Air pump....Should I remove it? Every time I start my engine I have to hear this run, of course it shuts down around 10-20 seconds depends.... I guess you would call it the smog pump..I guess I can find it if I looked but where exactly is it located? Can I just remove it, or is there a kit I have to buy to replace it? I'm sure it's a horsepower robber, of course not a lot but, is it neccessry ? Had the car dynoed today...Put down 382 RWHP at 7,000 RPM....Torque was anywhere from 347-350 rear wheel at 7,000.. Car does have a hic cup at 3,000 RPM when you lean into the throttle, slight, but you feel it....Mechanic could not feel it on the dyno....Fuel pressure was good and the tune seems fine... The torque figures were a little erratic...My wires may need changing...They do look a little old but they are not factory ( car has 43,000 miles) Also going to swap out plugs.....Lets hope it clears the slight hic cup..