Procharger Dyno
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Procharger Dyno Just back from tuning the engine after the Walbro 340 and 42's injectors install.
Last time:
451.1 RWHP 514.8 RWTQ
This time:
474.8 RWHP 538.6 RWTQ - Unlocked
486.4 RWHP 440.4 RWTQ - Locked
But the biggest improvment was at part-throttle.
It was so pig-rich between 2500 and 6000, AFR was below the scale @ 10:1
AT 5200 rpms, RWHP was 325, RWTQ was 325. After getting the AFR leaned out to 11.8, RWHP jumped to 400, RWTQ to 400
I can feel that 75 jump.
Last time:
451.1 RWHP 514.8 RWTQ
This time:
474.8 RWHP 538.6 RWTQ - Unlocked
486.4 RWHP 440.4 RWTQ - Locked
But the biggest improvment was at part-throttle.
It was so pig-rich between 2500 and 6000, AFR was below the scale @ 10:1
AT 5200 rpms, RWHP was 325, RWTQ was 325. After getting the AFR leaned out to 11.8, RWHP jumped to 400, RWTQ to 400
I can feel that 75 jump.
10 Second Club
Joined: Apr 2002
Posts: 1,755
Likes: 2
From: Cincinnati, Ohio
I'm curious to see how you feel about the power curve after you drop the compression. I'll bet it has snappy low end response with the 11:1. I know you can get bigger #'s with higher boost on lower comp. but you give up some down low. Plus you may get into the belt slip problems. You've got it pretty good right now those are nice numbers on low boost. Not trying to be a pessimist just some thoughts
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Verdad Gallardo If you sprayed all the way up then you should have picked up ~40 at the wheels peak. If its a wet kit it may have been too rich, getting the fuel jetting down for such a small shot takes a little time.
Also depends on bottle pressure, etc. I shut mine off at 5900 and it pretty much picks up 40-60rwhp with a 50 shot over just the blower until it shuts off - torque really jumps up.
Also depends on bottle pressure, etc. I shut mine off at 5900 and it pretty much picks up 40-60rwhp with a 50 shot over just the blower until it shuts off - torque really jumps up.
Thread Starter
Joined: Nov 2001
Posts: 3,066
Likes: 0
From: Sunny San Diego
Originally Posted by 2001WS6Vert
I'm curious to see how you feel about the power curve after you drop the compression. I'll bet it has snappy low end response with the 11:1. I know you can get bigger #'s with higher boost on lower comp. but you give up some down low. Plus you may get into the belt slip problems. You've got it pretty good right now those are nice numbers on low boost. Not trying to be a pessimist just some thoughts
The low end is nice. I would like to keep the power under the curve. If I had known it would have ran this well on high CR. I may not have ordered my 6.0L heads.
Originally Posted by Ed Blown Vert
The low end is nice. I would like to keep the power under the curve. If I had known it would have ran this well on high CR. I may not have ordered my 6.0L heads.
Good numbers man.....
Kyle
Thread Starter
Joined: Nov 2001
Posts: 3,066
Likes: 0
From: Sunny San Diego
Originally Posted by kp
If you sprayed all the way up then you should have picked up ~40 at the wheels peak. If its a wet kit it may have been too rich, getting the fuel jetting down for such a small shot takes a little time.
Originally Posted by kp
Also depends on bottle pressure, etc. I shut mine off at 5900 and it pretty much picks up 40-60rwhp with a 50 shot over just the blower until it shuts off - torque really jumps up.
I took a closer look at the dyno sheet. It did run a bit leaner on a 35 shot. Bottle pressure was 950. But I did gain about 30 rwhp under the curve. Then I realized I had the Window Switch set to 6300 and I was running the dyno to 6600.
I think I would have touched 500 rwhp if I didn't cut the N20 off so soon.
Here is one of the dyno runs without N20.
I shut mine off at 5900 since my injectors are getting maxxed out. I still picked up .4 and 4mph shutting off the 50 shot at 5900 with 1000psi bottle pressure, I shift at 6500.
Knocked over a tenth off the 60' and I dont even have a purge on the car, it works..
Knocked over a tenth off the 60' and I dont even have a purge on the car, it works..
Originally Posted by Ed Blown Vert
Nice gains for a 50 dry.
Mine is a 35 wet, so don't have to worry about injectors. Oh ya, fuel pressure stayed @ 50 psi.
Mine is a 35 wet, so don't have to worry about injectors. Oh ya, fuel pressure stayed @ 50 psi.
Is your base set at 50psi????? I know when i had a Walbro 340 intank and was running 42# injectors bt base was at 62psi.......
Kyle
Originally Posted by Ed Blown Vert
Still have the stock regulator. FP was 63# at idle then drops to 50# at WOT.
I am still thinking I am running out of injector at the very top end.
I am still thinking I am running out of injector at the very top end.
Kyle
Thread Starter
Joined: Nov 2001
Posts: 3,066
Likes: 0
From: Sunny San Diego
It looks like I spun the engine to 7200. TC skewed the numbers. It was only 6500-6600. Just so I could find peak HP.
I have my shift points @ 6100, it shifts between 6200-6300
I have my shift points @ 6100, it shifts between 6200-6300
