With your comments, it would appear you are actually may be running lean. You don't want to be anywhere near 14.7 AFR when pushing boost and your plugs shouldn't be perfect white. Your gas mileage would also point towards lean conditions.Wow..all this criticism. I was an early adopter for the turbo kit(number 3, I believe) and could'n be happier.
The only issue with the installation, which Jon did, was a small oil leak at the lower return line to the pan from the
turbo(corrected with a clamp). At 25,000 miles(all turbo time), I pulled all the plugs for inspection. To my amazement, they where
as white as the day I put them in and with zero carbon. The iridium electrode looked brand new. This means the engine is running
close to or at a FAR of 14.7 (perfect). MPG is averaging 35 with best 38, worst 32. Oil: Mobile 1, 5-40W turbo diesel. 2 bar map
sensor(a must).
14.7 Afr is far from performance perfect, Epa perfect, yes. If the engine didn't have knock sensors, you would have holed the pistons by now. 12.8-13.5 is where you want to be.With your comments, it would appear you are actually may be running lean. You don't want to be anywhere near 14.7 AFR when pushing boost and your plugs shouldn't be perfect white. Your gas mileage would also point towards lean conditions.
His kits seems to run pretty good at 5000 feet and above. It is when people got closer to sea level that they had / have issues (first versions with small turbos).
But hey, if it is running good, I wouldn't mess with it.
Still too high for our application.14.7 Afr is far from performance perfect, Epa perfect, yes. If the engine didn't have knock sensors, you would have holed the pistons by now. 12.8-13.5 is where you want to be.
I agree, didn't want to get into a tuning lesson. I run 12.3 @ 80-100% tp and 12.8 in the 40-80% tp and in the 12.8 -13.5 range in the 4-40% tp.Still too high for our application.
If we are seeing anything over 12.5, we are adding fuel.
I hope he is reading these threads.JonV is pretty active with tuner cars, both local and international clientele - my nephew knows of Jon and his work and he seems to still have a good reputation in this community.
Obviously, he's given up on the SS market (no longer a sponsoring vendor of this forum), apparently as long ago as last fall when he didn't deliver for iNewton's friend. One-on-one Jon is an OK guy, I never would have initially thought he would screw over some of the SS community like he apparently has done.
I don't think his SS turbo kit caught on like he thought/hoped - although I think his reputation of late/non delivery was the primary influence on this. His failure to follow thru on a paid for full turbo package, baffles, etc is troubling.
He fixed the boost creep issue on the new headers.This will be good for DDM or Alpha or Hahn so when they blow their V engine they will need a new one!
Sounds like there was some kind of falling out that happened...but he is still making, selling, and installing kits. I know that Dan has had a VI kit for a long time and I don't believe he has any issues, especially after the 2 bar map upgrade from Bob.I was surprised today while I was talking to a new SS owner here in Denver area, he said a local dealer (Sun ENT) was going to be installing a turbo on his SS. I asked him who's Turbo and all he knew was that it was local. I found out that it's Jon V, evidently he's install 6 or so for the dealer in the Denver area. I told my new friend to run far away from the Vi turbo.
Actually, I would argue that point...there's nothing inherently wrong with Jon's turbo kits (after the boost creep problem was addressed several months ago). In fact, having a reputable dealer such as Sun as the middle man should be a positive.I was surprised today while I was talking to a new SS owner here in Denver area, he said a local dealer (Sun ENT) was going to be installing a turbo on his SS. I asked him who's Turbo and all he knew was that it was local. I found out that it's Jon V, evidently he's install 6 or so for the dealer in the Denver area. I told my new friend to run far away from the Vi turbo.
