Incorrect AFR at WOT Help!!
- Thread starter kskrew4life
- Start date
ecoboostsho
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You would be correct. Certain PIDs do indeed return more information (multiple bytes) where as others simply don't need the resolution and use less bits...ajpturbo said:
kskrew4life
New member
Has anyone else notice 5+ kr at cruising speed while on cruise control? under WOT kr is -4 to =1 (which is normal) odd that im seeing knock at cruising since not altof load is on the engine
Have u seen your spark at low loads?...it's likely 30-45 degrees....very easy to get knock there...and when u are tipping in and out of the throttle it can be lean for a brief time making preignition possible
Remember the ecu is always riding the edge of incipient knock so even at part throttle you are making maximum power
Remember the ecu is always riding the edge of incipient knock so even at part throttle you are making maximum power
kskrew4life
New member
yes premium .. mobile one... i tried again earlier on the highway now no kr cruising.. wierd
Make a note of as many details during the occurences as possible: what gear you were in, what were the rpm's, did the load change, how much advance, etc. Like aj says, probably perfectly normal, but since we like dig into things here, why not? 
Sometimes sensors have a brain fart or valves don't open/close at the precise moment they are expected to. I assume the knock sensor wiring has been checked and/or taped off? BTW, at least in some people's experience, even Mobil 1 may not be the best fuel for your area. So try changing brands (always use a high-volume station, preferably top tier) and see if that makes any difference. Run some Techron or BG44 through the gas tank (doesn't hurt, may help).
Sometimes sensors have a brain fart or valves don't open/close at the precise moment they are expected to. I assume the knock sensor wiring has been checked and/or taped off? BTW, at least in some people's experience, even Mobil 1 may not be the best fuel for your area. So try changing brands (always use a high-volume station, preferably top tier) and see if that makes any difference. Run some Techron or BG44 through the gas tank (doesn't hurt, may help).kskrew4life
New member
Hi guys here is the latest log its pretty meaty..all looks well here
kskrew4life
New member
this is the previous log showing KR above +3 (same tank of gas as the meaty log)
kskrew4life
New member
SHOdded said:Make a note of as many details during the occurences as possible: what gear you were in, what were the rpm's, did the load change, how much advance, etc. Like aj says, probably perfectly normal, but since we like dig into things here, why not?
Im always monitoring the data in real time which is not really a good way to actually create logs. I have an hour trip later today so i will log at cruising and see if anything comes up. Techron vs BG44 is one better than the other? i have never add any additives to my tank before so deff not a bad idea. Mobile is considered top tear here. I always used to go to cumberland farms (golf re-brand) but they were recently acquired by a different company. the choices here are Hess, sunoco, golf, mobile, stewarts, shoprite, BJ's.... and literally as of today a Speedway. I have no idea if speedway is any good. there are numerous no nane gas stations which i tend to stay away from. There is a pitstop but they dont have 93 octane gas.
BG44K is generally considered a superior FI cleaner, but Techron is also very very good (OEM recommendation from BMW, e.g.). Neither will get any carbon on the backs of the intake valves, but anything from the fuel tank to the combustion chamber to the valve faces will get cleaned out. I recently put up a thread about ACES IV, which MIGHT work on the back of the valves also, but little data on that.
No Costco? These are Top Tier stations:
http://www.toptiergas.com/retailers/
No Costco? These are Top Tier stations:
http://www.toptiergas.com/retailers/
I certainly agree with SHOdded,and definetly pour a can of B.G 44K fuel system cleaner in your tank at least every oil change for optimum performance especialy if your limited to top tier gasoline in your area,have been using BG-44K and Chevron techron for quite sometime now and definetly would recommend them,personaly like the BG product thats in a can and the label clearly says made for DGI. Z
Ran it in the tank on the way to SHO-CAGO and averaged 24.3 with a 17% corn mix and avg speed of at least 82 mph with a few WOT pulls into triple digits....with 4-500 lbs of cargo on the way home and the regular fuel concoction of 10% E, avg speed of 90+, and a few WOT pulls DEEP into triple digits we got 26 mpg's!!!SHOdded said:
The 21.8 I'm at now is with a full night of shenanigans on Woodward SHOwing many V8'S what the family sedan is packing...had a guy in a Charger RT look over at a light and say, "I see what you did, we can't tell what car you're driving"..."just a taurus"...he asked to run em then...I swear I put at least 6 cars on him by 70 mph
Rich
Little nuggets of info throughout this thread (not specifically DI, but Techron FI cleaning-related):
http://www.renntech.org/forums/topic/44858-using-techron-concentrate-total-system-cleaner-anyone/
http://www.renntech.org/forums/topic/44858-using-techron-concentrate-total-system-cleaner-anyone/