Where do yall set your water meth start and full psi at?

 

First boosted run today and I could barely get to 1-2psi because the road was just wet enough the tires would start to spin. Motor is very happy so far. Got this from the tuner.

Logs look great, KR is flatline, if not learning up. IATs 79* (WOW! I don’t think the SC guys could ever dream of ambient temps into the motor!!). Trims in boost are well under 5%, so they aren’t affecting target fueling. Can you confirm what boost level, for some reason it’s not reading on my logs… AFRs are a tad on the lean and I don’t mean dangerous or scary, but it’s hovering around 12, I’d like to see it more in the mid 11s range, but first I need to see what boost we are at. It could also have pulled the AFRs back a tad due to traction control and the loss of load mid run. The reason I am not concerned…. Look how happy the engine is!! It’s adding back 3* of timing and learning up right in the meat of the run. Engine = Happy

Look at actual spark, 16* which is solid timing, look at the KR, it’s at 0, meaning it’s loving it and adding as much timing and learning up as possible!

 

I am not familiar with Toyota tuning, what is this 'learning up' of the KR that is mentioned? The log looks odd to me, the KR is going up to zero, thus presuming it was negative KR previous? Actual spark is unchanged thru the two knock pid transitions so it is a bit confusing.

 

Toyota's are goofy and I'm not 100% schooled up on them so forgive me if I don't describe it right. Knock learn is the computer trying to add in as much timing as it can before it senses knock. KR feedback is the knock feedback to the computer about the knock it's experiencing but it's inverse so -3* is zero knock and then -5* is knock and -6* it starts to pull timing. The fact that KR is at 0* means the engine is trying to add timing. The formula for Ignition Advance is calculated as: Final Timing = Minimum Spark + Knock Correct Learn + Knock Feedback - Knock Offset. The one thing I don't understand is the knock offset and how that factors in to it.

 

Interesting concept. I presume Min Spark is the only tunable part of that equation unless there is a limit on the correction.

 

Knock offset is adjustable also. I really struggle with following the spark and timing tables.

In other news, added the 1.5psi spring in today to bump boost to 4psi. AFR’s leaned out to 12.7 and there was a degree of KR but still looking good. Another rev and we should be able to take it to 6psi and then add meth.

 

Awesome. Took the down pipe off to clearance it a bit for the tire and in doing so I straightened out the bend and now it doesn’t want to fit back in place.

 

5hrs later it’s back in. V band doesn’t sit perfect but it’s at least enough to get connected and drive while I get a new one on the way.

 

Turbokits.com is a fantastic company to work with. They called me this morning and are shipping me their downpipe from their test truck to get my truck back on the road. Even offered to overnight it. I was fully prepared to have to buy a new pipe and pay expediting fees or something but all it’s costing me is shipping. Can’t thank them enough for this.

 

OOF! That's rough. Glad manufacturer is taking care of it. Curious if the prototype downpipe will be any different. Are your tires oversized from OEM? Looks like you have aftermarket wheels so that could also be a factor.