WoooHoooo! Dynotune results!
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Joined: Mar 2001
Posts: 164
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From: Columbus, Ohio
WoooHoooo! Dynotune results!
History:
Ran in Indy 3 weeks ago without a wideband, so did no S-AFC tuning:
169 RWHP 201 lb/ft Torque
Sought help from the guys on this forum....
Added Walbro,Bonez DP, and High flow cat
Today tuned with wideband O2:
229.7 RWHP 228.9 lb/ft Torque
(running 11psi)
A HUGE thanks to all who gave me guidance!!!
Mike
Ran in Indy 3 weeks ago without a wideband, so did no S-AFC tuning:
169 RWHP 201 lb/ft Torque
Sought help from the guys on this forum....
Added Walbro,Bonez DP, and High flow cat
Today tuned with wideband O2:
229.7 RWHP 228.9 lb/ft Torque
(running 11psi)A HUGE thanks to all who gave me guidance!!!
Mike
Last edited by 89turbo2dutch; Apr 20, 2002 at 07:03 PM.
Thread Starter
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Joined: Mar 2001
Posts: 164
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From: Columbus, Ohio
My assumption is that freeing up the exhaust was the main factor. The stock cats were restrictive and choking the flow, thus poor power. The 11 psi I'm running is solely due to the upgrades in intake and exhaust.
The mods that I had done previously were not helping until I could get the exhaust to exit more freely. I would not expect that simply bolting on a downpipe and high flow cat would give you anywhere close to a 60 hp gain. Tuning fuel ratios helps quite a bit as well!
Mike
The mods that I had done previously were not helping until I could get the exhaust to exit more freely. I would not expect that simply bolting on a downpipe and high flow cat would give you anywhere close to a 60 hp gain. Tuning fuel ratios helps quite a bit as well!
Mike
Last edited by 89turbo2dutch; Apr 20, 2002 at 07:16 PM.
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I came, I saw, I boosted.
Joined: Apr 2001
Posts: 1,921
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From: Windsor, Ontario, Canada
Is the richening to under 12:1 at high RPM's for safety's sake? ie, would you have a little more power running at 12.1 all across? Because I know N/A's make more power running almost 14:1 up high, and about 12.8:1 in the midrange.
So at no point were you adding fuel? Cool. Your car mustave been running pretty rich.
So at no point were you adding fuel? Cool. Your car mustave been running pretty rich.
Rotary Enthusiast
Joined: Mar 2001
Posts: 833
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From: St. Charles, IL
Yah i witnessed mikes horrible dyno run at indy, it didnt help him any to see mine pull 224.2 HP and 211.2 ft/lb torque. Altho all i have a midpipe, intake, j spec motor. (still have t hat cat in the DP) and no tuning done. but im glad to see mikes finally gettin numbers out of his motor.
and mike...
I TOLD YOU GET THAT DOWNPIPE!
and mike...
I TOLD YOU GET THAT DOWNPIPE!
Wow! Over 60 hp gain from those few mods
Adding the DP and free flow cat obviously also helped the other mods work more efficently
billz: mike was telling me how jealous he was!
nice car mike
Adding the DP and free flow cat obviously also helped the other mods work more efficently
billz: mike was telling me how jealous he was!
nice car mike
Thread Starter
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Joined: Mar 2001
Posts: 164
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From: Columbus, Ohio
chatch,
My torque curve was basically a flat line. I hit 227 lb/ft @ about 3100 rpm. peak was a tiny jump to 229 lb/ft at about 4200 rpm.I didnt drop below 225 lb/ft until after 5200 rpm. (just from memory)
I'll post a scan of the dyno slip shortly.
My torque curve was basically a flat line. I hit 227 lb/ft @ about 3100 rpm. peak was a tiny jump to 229 lb/ft at about 4200 rpm.I didnt drop below 225 lb/ft until after 5200 rpm. (just from memory)
I'll post a scan of the dyno slip shortly.
cool dude...congrats!
). Keep up the good work 
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