Just wondering,
             How important is the CS injector on a stock 5kTQ?  And, How much d
oes it affect the engines performance?  Will a bad CS injector make it run roug
h, or bad in cold weather?  And, is it a good idea to replace (upgrade) this pa
rt as the car gets older?
             Can the Mercedes V8 CS injector be used on a 5kTQ also, or is this
 useless?  Thanks.
                                                           Later,
                                                            Dan