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| Northstar rebuild: Will style (Page 79/119) |
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Will
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JAN 22, 02:43 PM
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Thanks!
Just gotta get them installed.
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IXSLR8
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JAN 31, 02:00 AM
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How's the LS1 computer working?
I still have that dang stall issue.
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Will
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FEB 01, 12:53 PM
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Runs great... needs a touch up tune since I finished the CAI that is infinitely superior to the mitred intake tube I had installed previously.
It does not stall, HOWEVER, I DO have the clutch switch input to the Shelby computer hooked up. Do you have that in your install?
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IXSLR8
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FEB 02, 02:16 AM
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Yes, I believe I do.
The fiero clutch switch was backwards if I remember right. I had to wire it the way the Shelby liked it.
I do have the mild 272 cams...the Shelby program netted nothing over stock STS cams by my local performance tuner. I'm thinking about reverting back to stock cams to see if that makes any difference with stalling.
Who did your base tune?[This message has been edited by IXSLR8 (edited 02-02-2014).]
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fieroguru
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FEB 02, 08:02 AM
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| quote | Originally posted by IXSLR8:
How's the LS1 computer working?
I still have that dang stall issue. |
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More than likely, you need to increase the values in the Base Running Airflow Table and possibly adjust the Throttle Follower and Throttle Cracker tables.
My LS4 is running an auto only calibration with a 224/232 camshaft and a 6 speed and don't have any off throttle stalling issues... its all in having the right values in the tune. Larger camshafts need more airflow at idle.
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IXSLR8
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FEB 02, 04:36 PM
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Sounds like I'm going to have to learn how to tune...or find a person of excellence here in Portland.
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Will
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FEB 03, 08:01 AM
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| quote | Originally posted by IXSLR8:
Yes, I believe I do.
The fiero clutch switch was backwards if I remember right. I had to wire it the way the Shelby liked it.
I do have the mild 272 cams...the Shelby program netted nothing over stock STS cams by my local performance tuner. I'm thinking about reverting back to stock cams to see if that makes any difference with stalling.
Who did your base tune?
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Sinister set it up to run with the Northstar, but didn't have access to the right MAF tables. I had a local tuner dial it in.
The beauty of the Shelby computer is that ANY tuning shop (or you if you throw down for HP Tuners) can make changes.
I don't know why you'd have problems and I wouldn't, though. I guess your cams vs. the idle settings might be causing your stalling issue. That should be straightforward to tune out as any tuning shop has seen dozens of cammed LS1's. I told the shop I went to that it would be like tuning a full-bolt-on LS1 that still had the factory tune and he did fine. You did tell him yours is cammed, right?
I have 288's on the shelf, so I'm probably going to go through some of the same problems when I upgrade.[This message has been edited by Will (edited 02-03-2014).]
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fieroguru
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FEB 03, 07:52 PM
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Here is a good thread on idle tuning the Gen 3 engines with larger camshafts using HP Tuners:
http://www.hptuners.com/for...real%20time%20tuning
If you are going to spend the $$$ on an engine swap, go ahead and buy a tuning package and learn to tune it yourself. It will save you a lot of headaches and likely more $$$ in the long run.
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Will
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FEB 07, 10:00 PM
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Diamond Dave
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MAR 03, 01:17 AM
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Hey Will. There is supposed to be a company in Canada that does super strong axels for the fieros. I might be able to get the manufacturers name if interested. I belive they were around $1400. Supposed to be good enough for the dragsters up to 1000 horse. Also you referenced a Shelby computer. Like in mustang shelby or is that a brand?
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