Injector check. posted by darkwithn on October 03, 2012 at 08:12 PM
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4,5,6, are toast. They have also been causing the others to work harder to get fuel to the motor while they were on the way out. You REALLY need to change all 6. There is a good write up on here for a plenum pull. It is a very detailed in-depth, step by step tutorial. Don't waste your time or money on JECS or Deatschwerks. Get either stock oem or NISMO. Your car will thank you now, your wallet will thank you later.