PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Tuning for a big cam

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Old Sep 16, 2006 | 09:15 AM
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Default Tuning for a big cam

If I can smell fuel pretty good when I'm sitting in the car should I get it tuned better? I have a TREX cam, full exhaust, bolt ons, A3. The previous owner said the car was tuned for nitrous so its a little bit rich. Its not extremely rich to where it burns your eyes but I can definately tell its rich, I'm hoping I can get more horsepower with the air/fuel adjusted.
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Old Sep 17, 2006 | 10:10 AM
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At idle it shouldn't have the fuel smell. The nitrous tune part should only affect wide open or full throttle operation.
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Old Sep 17, 2006 | 01:17 PM
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mine is tuned with hp tuners speed density mode and it works really good. I also have the T-rex
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Old Sep 17, 2006 | 01:32 PM
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A big cam, especially without cats is going to emit more fumes, it's the nature of the beast.
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Old Sep 18, 2006 | 09:58 AM
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Originally Posted by import slayer
mine is tuned with hp tuners speed density mode and it works really good. I also have the T-rex
Is that a hand held tuner? Also what kind of valve springs, lifters, pushrods, and rockers are u using with your cam?
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Old Sep 18, 2006 | 10:21 AM
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Originally Posted by Ima get mines
Is that a hand held tuner?
no, its a full tuning suite...as far as the exhaust smell, with no cats its normal to smell what your smelling...its just unburnt exhaust gas you could be running 15.0:1 and you'll still smell the same thing.
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Old Sep 18, 2006 | 10:36 AM
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Get use to the smell, no way around it unless you put cats back on the car.
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Old Sep 18, 2006 | 10:38 AM
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So its like a computer tuning software that I can adjust and then plug it into my car? Does it require a laptop?
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Old Sep 18, 2006 | 10:42 AM
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Originally Posted by Ima get mines
Does it require a laptop?
Unless you plan on running a 50 foot usb wire out to your vehicle, yes a laptop is pretty much required

With more then capable laptops starting at around $150 on ebay and NEW laptops going for $399 they are very affordable.
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Old Sep 18, 2006 | 10:48 AM
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Originally Posted by foff667
Unless you plan on running a 50 foot usb wire out to your vehicle, yes a laptop is pretty much required

With more then capable laptops starting at around $150 on ebay and NEW laptops going for $399 they are very affordable.
Well i have a good PC inside, maybe i'll get the 50ft usb cable

I wonder if these $150 laptops are capable of running the software..
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Old Sep 18, 2006 | 11:00 AM
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Minimum requirements

400 MHz CPU
128 Mb RAM
Microsoft Windows® 98 SE
Serial Port* (Version 1 Serial Interface Only)
USB Port (Version 2 USB Interface Only)

personally though laptops are so cheap NEW that theres very little reason to buy used anymore unless you find a REALLY good deal. I purchased my latest one for $449 & recently bought a 1gb stick of RAM for it and I'll be set for a while.

Last edited by foff667; Sep 18, 2006 at 11:21 AM.
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Old Sep 18, 2006 | 12:04 PM
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Also what kind of valve springs, lifters, pushrods, and rockers are u using with your cam?
I use the lifters, pushrods, etc. that come with the thunder racing cam kit
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Old Sep 18, 2006 | 04:01 PM
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got my lap top off ebay for $230 but it has to have the cd-rom and usb port and thats it, got mine from csr technologies. go check it out.
foff i wish you lived here in bama so you could show me how to use this hptuners ive got lol.. no1 here knows how to use it and im trying to learn. i dont even know how to turn torque management off.
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Old Sep 18, 2006 | 04:06 PM
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im making up flash demo's on alot of stuff...working to make more, just waiting to get the thumbs up for the last batch...if that goes through I'll see what I can do as for TQ management.
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