Timing for new TFI 355ci.
Thread Starter
Racer
Joined: Jul 2004
Posts: 434
Likes: 0
From: Santa Barbara Minnesota
Timing for new TFI 355ci.
Hi guy's, I been gone for awhile .. but I'm Bak..
I finally got the new motor in and running. It is using Trick Flow 420hp. Street Bracket kit w/stock TPI., Sanderson shorty headers. The cam is flat tappet hydraulic 228º/234º duration at .050. Heads are 64cc. chambers 195cc. intake..
I just put the stock chip back in for the break in, was running real rich w the custom racing prom.The timing is currently set at 10º advance. But still seems to be running to rich. There are some white puffs of fuel, and the exhaust tips are black. Seems to me it could be advanced much more. Any ideas? There is about 1K. mi. on it now.. Thanks in advance, Chris
I finally got the new motor in and running. It is using Trick Flow 420hp. Street Bracket kit w/stock TPI., Sanderson shorty headers. The cam is flat tappet hydraulic 228º/234º duration at .050. Heads are 64cc. chambers 195cc. intake..
I just put the stock chip back in for the break in, was running real rich w the custom racing prom.The timing is currently set at 10º advance. But still seems to be running to rich. There are some white puffs of fuel, and the exhaust tips are black. Seems to me it could be advanced much more. Any ideas? There is about 1K. mi. on it now.. Thanks in advance, Chris
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Did you unhook the tan/black wire when you set timing ??
When I did mods on my 87 it took the chip burners 3 tries to get the tune right. Mine was running very rich with the first one. Runs like total crap with the stock chip.
When I did mods on my 87 it took the chip burners 3 tries to get the tune right. Mine was running very rich with the first one. Runs like total crap with the stock chip.
Thread Starter
Racer
Joined: Jul 2004
Posts: 434
Likes: 0
From: Santa Barbara Minnesota
Originally Posted by CFI-EFI
The ignition timing has nothing to do with it running rich. Leave the timing alone until you track down and correct the cause of that rich mixture.
RACE ON!!!
RACE ON!!!
Thread Starter
Racer
Joined: Jul 2004
Posts: 434
Likes: 0
From: Santa Barbara Minnesota
Running Rich 355 ..
Originally Posted by Spankyellow
Did you unhook the tan/black wire when you set timing ??
When I did mods on my 87 it took the chip burners 3 tries to get the tune right. Mine was running very rich with the first one. Runs like total crap with the stock chip.
When I did mods on my 87 it took the chip burners 3 tries to get the tune right. Mine was running very rich with the first one. Runs like total crap with the stock chip.
Thread Starter
Racer
Joined: Jul 2004
Posts: 434
Likes: 0
From: Santa Barbara Minnesota
I'm not sure, maybe fuel pressure is to high,?
Any thoughts on what the pressure should be? That may be it? It has new 24lb. injectors
Originally Posted by CFI-EFI
Of course.
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Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
What pressure was the chip tuned for? The right pressure is the pressure that allows for the correct A/F mixture. Besides there are any number of other things it could be. One cannot tell from the forum. It is time to do some trouble shooting.
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RACE ON!!!
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Race Director
Joined: Sep 2003
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Likes: 341
From: Database Error Indiana
Originally Posted by #70SM2
Yup, the stock chip sucks .. I didn't set the timing .. it was done at Camarrillo performance on 'Mustang Dyno' What is amazing it is getting killer gas mileage with the race chip.. 25mpg. highway, and that's w/373 gears. ??
My dash says 24. Chip burner did not fix the injector constant for the dash. It really gets 18. It will get 25 on the highway roadtrips.