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Took wifes PT to our dyno club meeting.Its a 03 turbo,silencers removed,drop in k&n filter,stage1,11,000 miles on it. Results hp 199.3-torque 264.5.Here is my concern air fuel ratio seemed very high 17.5.Good,bad,ugly?
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paulkopick, welcome to the forum. Sorry I can't answer your question but I sure one of the GT guys will be able to help you.
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![]() 2002 Inferno Red PT Limited Photos and more at: http://www.randgraphics.org/PT_Cruiser/demos/index.htm Mercedes Wiki |
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The A/Fr was so high because DC needs the car to last thru their 7/70 warranty.
AC
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If it doesn\'t fit get a hammer. If it still doesn\'t fit, get a bigger hammer. - Jesse James ![]() |
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never mind...brain fart
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Sounds great man, even better than mine with the stock PCM!
3BarBoost said the reason they run so bloody rich at WOT is also to lubricate the cylinder.
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![]() ![]() \"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.\" Benjamin Franklin, Historical Review of Pennsylvania, 1759 www.cybermopar.com TripleJack |
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This has the upgraded pcm that came with stage1. What is a safe a/f ratio on the gt compared to our17.5???Thanks all for the input.
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air to fuel ratio i could be wrong but air:fuel......10:1 rich?
17:1 lean?
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\'03 pt gt s1 mopar bov auto patriot blue 1925 modle t pulling truck w/864hp 673ft/lb 2002 harley, 1998 zrt 600 cat http://cpatrucks.org/members/endres.html |
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17:1 is "MEGA LEAN" (17 parts air to 1 part fuel). I'm surprised you didn't blow your motor and that the dyno operator didn't shut it down immediately.
Aloha, Mark |
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Wow! Something is very wrong, you are dangerously LEAN!
What exactly does the AFR graph look like? What RPM are you hitting that 17.5:1? Through the full range or at redline? Is it possible the wideband is faulty or wasn't hooked up correctly. What is your boost spiking to? You should be seeing 10:1-12.5:1 depending on certain variables.
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PT powered PT with: Fully built HRC Turboed 2.4: Wiseco pistons, T2 rods, Port & Polished head (Bob Special) with oversize Stainless Steel valves, #14 Crane Cams, AF/X UDP, No balance shafts, Custom 3\" downpipe, 3\" hi flow exhaust, Ported GT intake manifold, Bored Throttle Body, 30 lb injectors, Water/Alc. injection |
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Quote:
If you don't install the larger injectors, which are standard on the 04 cars, then this might explain the extremely lean AF ratio.
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![]() ![]() \"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.\" Benjamin Franklin, Historical Review of Pennsylvania, 1759 www.cybermopar.com TripleJack |
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