Upgrade spark plugs for tune Mercedes
Last edited by Davidkuo0330; Jul 24, 2015 at 03:06 PM.
Anyways, that was my opinion when I ordered them.
Good luck on your track race. Can't wait to see you kick butt.
Anyways, that was my opinion when I ordered them.
Good luck on your track race. Can't wait to see you kick butt.
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http://www.goodspeedperformance.com/...hp?prodid=1867
I've had them with my AMS tune for 11k miles so far no issues. Put down 590hp/726tq back in cool spring weather and most recently 562hp/685tq in 90* heat last week. Best dyno was 605hp/733tq but I don't have the graph

Press release on the plugs-
http://www.ngk.de/fileadmin/Dokument...oad_PDF_EN.pdf
Reasons to run a cooler plug-
https://www.ngk.com/learning-center/...or---do-i-need
Really a no brainier to go colder plugs, adding this much hp/tq anyone with knowledge modifying engines would suggest a colder plug. Same as putting a small shot of nitrous on an n/a engine, you could get away with stock plugs but a cooler plug will lessen the chances of issues.
Amazon.com: NGK SIZKBR8A8HS Laser Iridium Spark Plug: Automotive
I've had them with my AMS tune for 11k miles so far no issues. Put down 590hp/726tq back in cool spring weather and most recently 562hp/685tq in 90* heat last week. Best dyno was 605hp/733tq but I don't have the graph

Press release on the plugs-
http://www.ngk.de/fileadmin/Dokument...oad_PDF_EN.pdf
Reasons to run a cooler plug-
https://www.ngk.com/learning-center/...or---do-i-need
Really a no brainier to go colder plugs, adding this much hp/tq anyone with knowledge modifying engines would suggest a colder plug. Same as putting a small shot of nitrous on an n/a engine, you could get away with stock plugs but a cooler plug will lessen the chances of issues.
Let us know how they hold up
I only had the Renntech/NGK plugs installed for a couple of days. Don't see or feel any difference, but with the misfire thread I've been reading. I opted to be safe than sorry.
I only had the Renntech/NGK plugs installed for a couple of days. Don't see or feel any difference, but with the misfire thread I've been reading. I opted to be safe than sorry.











