qbnkiller
Conflaguration Specialist
Yesterday I went to the Bullseye Power car show, and had the opportunity to dyno the truck. Many members on here feel that the dyno is not a worthwhile endeavor, but if used as a tool to verify tuning trends I feel it is useful. I pulled the front propshaft off at home and brought it with me so I could reinstall it while I was there once I was finished.
X&M Dyno brought their portable dyno unit to the event. It was 3 pulls for $65, and $10 for each additional pull. The system was a Dynojet dyno. I paid my money, and was the first one on the dyno.
My first pull was the tune I drove in on. I spent quite a bit of time playing with this on the street - getting it fairly good. It was a 21# tune on E85.
First pull was 467HP/596TQ. My AFR's were 9.2 once I got into boost hard. I went through and pulled a bit of fuel out in the affected cells and made another pull.
Second pull was 482HP/627TQ. Still the AFR's were 9.2 once boost came in. I went back to the affected cells and pulled another 5% out of them.
Third pull was 497HP/638TQ. AFR's still didn't move! I started questioning my WBO2 sensor. I pulled #1 and #2 plugs and read them....still very fat. Pulled another 5% out and upped the boost to 22#.
Last pull was 511HP/650TQ and a max of 22.5# boost. AFR's were just starting to move off 10.2. I could have made another pass up there, but I was happy enough.
At this point, I sat down with the last dyno chart and look a good look at it. The truck is running very strong and still is fat. I know the dyno was not loading the vehicle as it is on the street, but I was able to see a few tuning things that I didnt have good feedback on while on the road.
I parked the truck, let it cool off, then put the propshaft back in. There were 20 other vehivles there - diesel trucks, ricers, and a couple domestic cars (newer Roush stage 3, 99 4.6L w/Vortec V-1, WS6). As the dyno runs continued, I went through my tune a little more with what I learned from the dyno. I took a few people for a good launch, and they came back with a different mindset on what these little trucks can do!
All in all, I had a blast. The truck is doing fantastically with such a small turbo (62mm compressor wheel, T3 housing, .70A/R) when compared to others with larger turbos. on the street, the truck gets on boost very fast. On this dyno sheet, it looks a little lazy getting from 2500-3500, but I had to roll into it because if I didn't, it would downshift and mess up the pull - we had to abort 3 runs because of this!. It grabs second gear (if you're in it hard) and breaks them loose for a quick second as it moves out. All in all, this is definitely a great little turbo for many people out there. I plan on spending a little more time with it - trying to see how far I can get this little thing to make power. If I am reading the compressor map properly, I still have another 150HP or so before I hit the wall with it.
I will see if I can get videos up later tomorrow!
X&M Dyno brought their portable dyno unit to the event. It was 3 pulls for $65, and $10 for each additional pull. The system was a Dynojet dyno. I paid my money, and was the first one on the dyno.
My first pull was the tune I drove in on. I spent quite a bit of time playing with this on the street - getting it fairly good. It was a 21# tune on E85.
First pull was 467HP/596TQ. My AFR's were 9.2 once I got into boost hard. I went through and pulled a bit of fuel out in the affected cells and made another pull.
Second pull was 482HP/627TQ. Still the AFR's were 9.2 once boost came in. I went back to the affected cells and pulled another 5% out of them.
Third pull was 497HP/638TQ. AFR's still didn't move! I started questioning my WBO2 sensor. I pulled #1 and #2 plugs and read them....still very fat. Pulled another 5% out and upped the boost to 22#.
Last pull was 511HP/650TQ and a max of 22.5# boost. AFR's were just starting to move off 10.2. I could have made another pass up there, but I was happy enough.
At this point, I sat down with the last dyno chart and look a good look at it. The truck is running very strong and still is fat. I know the dyno was not loading the vehicle as it is on the street, but I was able to see a few tuning things that I didnt have good feedback on while on the road.
I parked the truck, let it cool off, then put the propshaft back in. There were 20 other vehivles there - diesel trucks, ricers, and a couple domestic cars (newer Roush stage 3, 99 4.6L w/Vortec V-1, WS6). As the dyno runs continued, I went through my tune a little more with what I learned from the dyno. I took a few people for a good launch, and they came back with a different mindset on what these little trucks can do!
All in all, I had a blast. The truck is doing fantastically with such a small turbo (62mm compressor wheel, T3 housing, .70A/R) when compared to others with larger turbos. on the street, the truck gets on boost very fast. On this dyno sheet, it looks a little lazy getting from 2500-3500, but I had to roll into it because if I didn't, it would downshift and mess up the pull - we had to abort 3 runs because of this!. It grabs second gear (if you're in it hard) and breaks them loose for a quick second as it moves out. All in all, this is definitely a great little turbo for many people out there. I plan on spending a little more time with it - trying to see how far I can get this little thing to make power. If I am reading the compressor map properly, I still have another 150HP or so before I hit the wall with it.
I will see if I can get videos up later tomorrow!
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