whitestang07

Are there any downsides or upsides and how hard is it to do please help thanks

1988TTOP

remove all of the smog and egr **** and plug vac lines and the holes in the back of the heads

whitestang07

any up sides to it and do i need a new pully for the pump delete and were can i get the caps and stuff. how bout the vacumm hoses

whitestang07

will it mess anything up

1988TTOP

u dont need a new pulley u can get a idler pulley the the vac lines most auto parts store sell plugs for them and the holes in the back of the heads r 5/8 bolts i believe

mattdel

There is no good reason to delete the EGR on a street car.

Some basic theory to clarify how things work is in order…

The EGR shuts off at Wide Open Throttle (WOT), so it has minimal effect on performance. The addition of exhaust gas drops combustion temperature, increases gas mileage and reduces the tendency of the engine to ping. It can also reduce HC emissions by reducing fuel consumption. The primary result of EGR usage is a reduction in NOx emissions.

The EGR system has a vacuum source (line from the intake manifold) that goes to the EVR, computer operated electronic vacuum regulator. The EVR is located on the back of the passenger side shock strut tower. The computer uses RPM, Load. and some other factors to tell the EVR to pass vacuum to open the EGR valve. The EGR valve and the passages in the heads and intake manifold route exhaust gas to the EGR spacer (throttle body spacer). The EGR sensor tells the computer how far the EGR valve is open. Then computer adjusts the signal sent to the EVR to hold, increase or decrease the vacuum. The computer adds spark advance to compensate for the recirculated gases and the slower rate they burn at.

whitestang07

so is that a yes or no to do them i found a smog pump delete pully and bracket