Thread: seeing 7*+ of KR with conservative mods... Any suggestions??

Not knocks at all, passing on learned experience.

The TB spacer is usually only good to leak coolant into the intake. Which can cause you issues/kr
160 stat seems very cold for a 3.5" with a plog.
Who's 10.5 wires do you have? ZZP had a bad run for quiet some time, if you see misfires as well and these were ZZP. It's worth trying your old wires to see if the wires failed.
104 Plugs depending on the gap, might be too cold as well.

You say you are comanding 11.0 afr, what is the actual afr?

You need to get a wideband to log your AFR. Commanded does not always equal actual. Get a 180* T-Stat, I have read many things about the 160* T-Stat not allowing the oil to fully warm up and cause issues. 180* is good. Too cold of plugs or improperly gaped plugs can also cause misfires and then cause knock.

I have 180 t stat al605 11.7 afr wb tuned headers with 3.5 pulley on genv and only would like 2 * of knock before I installed 1.9 rockers


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Running AL104s can help with knock. I stress can. It can also cause it. I am a firm believer in motors having minds of their own on what they like or dont like.

Above all GET A WIDEBAND AND CHECK YOUR AFR. For all you know your running a 13 AFR and thats why you are knocking.

I had about 4 sets of plugs when modded. Kept trying different heat ranges and gaps until I found the best fit. There are a lot of other factors that come into play. Air density, altitude, temp, and the list keeps on going. It's not a bad idea for the cost of a copper plug to try a different range.

ZZP website for mods is outdated and mostly wrong.

Sign up on hp tuner forums, that way people with HPT can actually see your tune and logs.

With the stock tune what it was commanding for afr was deff not what the wb was reading so before anything you need to see where you actually are at


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Get a wideband and make sure you are running between 10 and 12 afr at wide open. My personal favorite is 11. Then set the timing to 18* at wide open and do a few pulls. If you are still knocking its most likely real knock. Ignore bursts of knock on shifts. Let us know what happens. If you want to log wideband use the center pin on the egr connector.

18 is too high for starting, stick with stock.

I run 13-14 because thats where is doesnt like to knock much at all.

You need to just check your plugs after going for a ride. If they are white they are burning to hot. If they are black and fouled looking they are to cold they should be a lightly grey.

http://www.dansmc.com/Spark_Plugs/Sp...s_catalog.html

There are some pictures in there showing examples.

So much misinformation.... cold plugs are not going to cause kr. Too hot of plugs can, Too lean of fuel mix can, too much timing can.

Originally Posted by frosty

So much misinformation....

Please do tell

Gotta remember that your plugs show that your cruise fueling is good. Your wide open throttle fueling will not show on the plugs