This is NOT a good idea for the reason you mention and several others. Depending on the type of car, and how you do it, you may also damage the electronic ignition, oxygen sensor and catalytic converter. Jeff maybe other countries are not so unfortunate as to have a place like California that dictates how all our engines should be designed in the new world. I keep hoping that California will detach itself along the San Andreas Fault and go quietly drifting off to sea. (Or under it). Jesse in Tennessee MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.