5.0 stroker tune problems
12/13/14, 07:54 PM
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5.0 stroker tune problems
I just joined this site and am excited to be here. But I'm already asking for help. My 2005 GT has a fresh 5.0 stroker motor with whipple 2.3 pushing 11.5 psi. I had the car dyno tuned at Archangel Motorsports in Tulsa OK and it's putting out 530hp at the tires. Runs great when the motor is at full operation temp, but stumbles bad when cold. the stumble (lean) slowly goes away as the engine heats up. You guys think it's a sensor problem, or a tune problem? And you can count Archangel out, they will not answer the phone, emails, facebook messages, smoke signals, nothing, no customer support whatsoever!!!!!
12/14/14, 01:06 PM
#3
I'd say it's your tune. Just a question... Do you have a return fuel system on the car?
Seems to me you should be Able to have some really good power from a stroker setup. 530 rwhp is very mild.
What type of injectors do you have?
Seems to me you should be Able to have some really good power from a stroker setup. 530 rwhp is very mild.
What type of injectors do you have?
12/14/14, 10:03 PM
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injectors are bosch EV-6 60lb. The original owner of this car installed a ford motorsports 500hp supercharger kit that included the whipple and gt500 fuel pump, so I guess no fuel return system. I added the stroker kit, cams, long tubes, injectors, MAF. I think the tune is mild with mild timing, 19 degrees I think.
1/3/15, 12:36 PM
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That whippled stroker will never run smoothly until it's warmed up reguardless of who tuned it. Nature of the beast unlike a centri blower which doesn't dump so much air at low R's.
Last edited by anthony05gt; 1/3/15 at 12:38 PM.
1/3/15, 02:35 PM
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1/4/15, 07:48 AM
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No, you have to figure that Whipple is really changing everything even right off idle. It takes a lot of tweaking the tables in the pcm to work out all the snags the blower and injectors cause and when the engine is cold it changes everything. Not only that, as the engine warms it's never the same temperature during the warm up. I'm not a tuner, but I'm sure a good tuner could try to smooth some of that, but he would need to adjust things during multiple cold starts and I don't even know if that's possible.
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