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First Dyno Experience... :(

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Old 02-15-2012, 06:17 PM   #41
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im going to start by saying what ive been told then i need some feedback on what to do next. I was told that the cig/accy fuse also operated part of the ecm?

That fuse was blown at the time of the dyno.

I have since replaced the fuse with a higher 30 amp.
it doesnt control anything in the pcm... but you wont be able to connect to the pcm with a scanner if that fuse is blown... the pcm data port shares power with that fuse

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Now that i can plug in the obd reader it says SECONDARY AIR which is the air pump?

ive also been told the air pump is an emissions device, but does it effect the power?
OR will replacing that fuse that supposedly also runs the ecm fix my air/fuel problems and loss of power problem?

this is all in question form and im only stating what has been told to me.
the Secondary Air pump is only active when the engine is cold...
above a certain temperature, it is shut off by the pcm...
it should not cause any differences on the dyno.

"to do next" would be to go back to the dyno
do pulls with the wideband in each exhaust pipe to see which one reads the richest, then check your HP/TQ Graphs... and decide if you want to spend thecash on a tune to re-dial the fuel and spark in to make the most power possible as your setup currently sits.
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Old 02-15-2012, 08:31 PM   #42
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do you think its worth the $ to replace the secondary air pump then? if it doesnt effect the dyno number or anything. and ive read where a lot of people delete them
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Old 02-15-2012, 09:13 PM   #43
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Nope.. just have somebody tune it out...and then physically remove it...unless you live in California....
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Old 02-15-2012, 09:15 PM   #44
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thanks for all the help man i appreciate it
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Old 02-16-2012, 08:34 PM   #45
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Did anyone catch he replaced the fuse with a larger one. You never do that as it will cause more problems.
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Old 02-16-2012, 09:54 PM   #46
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Nope.. just have somebody tune it out...and then physically remove it...unless you live in California....
or nj or any other state with an I/M program.
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Old 02-17-2012, 07:38 AM   #47
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Did anyone catch he replaced the fuse with a larger one. You never do that as it will cause more problems.
Yeah I caught that, fuses are sized to prevent melting wires or damaging circuits... OP, go back and replace with the original size. If it blows again, find your ground and fix.
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Old 02-23-2012, 01:48 AM   #48
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Any update on your car buddy? i just read through ur entie thread cause i really want to hear that your car has a functional heart. I dont want to believe there is an fbody out there that is putting down the #s u ave with those mods. dont say its true brotha!!!
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Old 02-23-2012, 11:02 AM   #49
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Any update on your car buddy? i just read through ur entie thread cause i really want to hear that your car has a functional heart. I dont want to believe there is an fbody out there that is putting down the #s u ave with those mods. dont say its true brotha!!!
cleaned MAF sensor and the intake/filter. Replaced all spark plugs. Going to order a Walbro Fuel Pump tomorrow and then take her back to the dyno to see how she does. And ive never heard of that with the fuses but ill replace it with the correct size

Last edited by Jake18; 02-23-2012 at 11:07 AM.
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Old 04-25-2012, 11:38 PM   #50
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update op???
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Old 04-26-2012, 09:36 AM   #51
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In for update
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Old 04-27-2012, 04:03 PM   #52
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Did you change your fuel filter before dropping the cash on a new fuel pump?
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