3 months and its still working fine!
I did mine with the Jag X-Type cap (which is the exact part as Lotus OE) and the Stant locking cap. Mine has been on for over 20,000 miles, never a CEL. The Jag cap is the only one which has proven to be an exact replacement. You really shouldn't have had to pay the Lotus price for the cap.Just a FYI to those that did the locking gas cap mod with a Stant 11507 and non-OEM (eg Jaguar) cap: I was able to drive my Elise with that mod for about 5000 miles without an issues. However, the CEL eventually came on (yes, the cap was on properly)and I needed to order a OEM cap from Lotus (which I did the locking mod to) to get the code to clear. Just something to keep in mind if those without OEM caps get the CEL down the road.
Looks exactly like my Stant conversion...for $12.00. (Sorry)my friend lives in UK, finally she found me the fuel cap w/ lock for 05 Elise, it come w/ 2 keys, works good no problem, same size same tall, dont need to do the mod. I paid GBP$45 and keep the factory cap for backup.
For those that don't know, the gas caps are calibrated to hold only so much pressure, and to hold only so much vacuum until the internal valves in the caps open. If either is off in calibration, then it may be detected by the ECU awhich will throw a MIL code. By the way, it's properly called a Malfunction Indicator Light, not CEL - Check Engine Light - now days. Actually since about '96 when the ECU started detecting many more things that could fault in the car (many that have nothing to do with the engine).Why not just get the Stant 11511 and not bother messing with the stock one?:shrug:
The CEL will reset. Mine took about 200 miles of local driving, 8-10 restarts...Advance has it for $15.98 BTW on the cell subject, if you replace the right cap. Will the cell go away or do you need to reset?
Buy Stant Locking Fuel Cap 10521 at Advance Auto Parts