Joined
·
614 Posts
My best ally ever is an independent small parts shop (three man operation, the delivery guy is a saint), twenty years of non chain and non web bliss.Now I just shop the local parts chains.
II used to have an independent just like that near me. Three guys who were there for a couple decades at least and always knew what you were talking about. Could get most common items (still went on-line for Saab particular stuff). I could walk there in a pinch. The owner (not a guy who was ever in the store) sold out to Car Quest. A year later, Advance opened a store in the next town over. A year after that Advance bought Car Quest... and then a few months later shut down the Car Quest store.My best ally ever is an independent small parts shop (three man operation, the delivery guy is a saint), twenty years of non chain and non web bliss.
Now I wonder if the Carnation Instant Breakfasts I get monthly from Amazon are real....
.
Higher temperatures, more air volume from the turbo, different engine tuning, different timing, spark advance etc, plus maintaining longevity, reliability and driveability are the reasons I would think as to why they state to use only those plugs.Makes me really wish the techline was still open so I could call and speak with an engineer to learn why they said to use ONLY the laser platinum BCPR7ES-11 and the PFH6R-10 for the Aero's and 04-05 arcs.
Personally I'd never use anything but those plugs. I tried the iridium's and the engine performance drop was very noticeable.
Not worth the risk of losing the DIC to me. A few years ago they weren't too bad but at $15 a plug its ridiculous.
Perhaps not the "exact reason" but the recommended plugs act as critical knock sensors.I'd love to hear the exact reasons...