Tuning for boost
Thread Starter
Racer
Joined: Jun 2012
Posts: 492
Likes: 1
Tuning for boost
Currently have a 01 Z06. Going to be boosting it soon. Remote TT setup. I have HP tuners and am very familiar with it on 4cyl chevys. I've come across a few things that talked about SD tunes. I'd love to switch over to speed density once the turbos are on. Whats needed to do this and get rid of the MAF? I only plan to run about 6-7psi, so not sure if there needs to be an ECU swap to switch to SD or maybe just changing the operating system or if its simply a matter or changing the MAP sensor and rescaling everything. Any guidance would be appreciated.
Team Owner
Joined: Jan 2007
Posts: 29,063
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From: cookeville tennessee
Currently have a 01 Z06. Going to be boosting it soon. Remote TT setup. I have HP tuners and am very familiar with it on 4cyl chevys. I've come across a few things that talked about SD tunes. I'd love to switch over to speed density once the turbos are on. Whats needed to do this and get rid of the MAF? I only plan to run about 6-7psi, so not sure if there needs to be an ECU swap to switch to SD or maybe just changing the operating system or if its simply a matter or changing the MAP sensor and rescaling everything. Any guidance would be appreciated.
Robert
Thread Starter
Racer
Joined: Jun 2012
Posts: 492
Likes: 1
I've never tuned anything with a MAF, only SD tunes with boost. I assume its pretty close to MAP tuning where instead of changing VE, you would be changing MAF frequencies?
So then if you can indeed use the stock MAF, really aside form the tuning part, the only changes that would need to be made would be larger injectors and changing the fuel constant? (assuming fuel pump shouldn't need changed at that low of a boost level)
Safety Car
Joined: Jun 2004
Posts: 4,353
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From: Bella Vista Ca
You will also need to change the power enrichment vs rpm to account for the increase in fuel needed under boost. There is a lot of good info on HP Tuner Forum to get you going. 6-7 lbs you would be fine with the MAF tune. SD can be used also by upgrading the OS, HPT forum has great help files on doing all this.
Thread Starter
Racer
Joined: Jun 2012
Posts: 492
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Thats right about where I would expect to be, if not just over with the TT's. As I said, I'm new to MAFs, so whats my best option for tuning this with HTP? Larger MAF or stock one modified some how? or switch over to the SD OS?
Team Owner
Joined: Jan 2007
Posts: 29,063
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From: cookeville tennessee
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Safety Car
Joined: Jun 2004
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From: Bella Vista Ca
Car is running fine and I think all the bugs are gone. I wish I had a track around here that didn't kick me off after the first run I get on it.... I really want to see how deep in the 9's I can get. My best run, 9.5, was the first run on the new motor.
Safety Car
Joined: Jun 2004
Posts: 4,353
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From: Bella Vista Ca
Again, HPT forum has a ton of help threads on how to set things up for MAF and SD.
Former Vendor
Joined: Aug 2011
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From: Tampa Fl
St. Jude Donor '12
Corvette Camaro GTO CTS GM Truck performance tuner in Tampa Orlando
Id be surprised if you dont exceed the maxium limits of the MAF at WOT.
Your MAF is limited to 12000 Hz. Since you exceed that limit, your computer will feel like its hitting the rev limiter. What's happening is the computer is reseting for a quick second. Not exactly what you want when your an FI vehicle.
You'll want HP Tuners to write a new operation system for your vehicle, or go speed density.
We just hired Ian Thomson former instructor for the tuning school, and he excels in forced induction engines.
www.TampaTuning.com
Phil
Your MAF is limited to 12000 Hz. Since you exceed that limit, your computer will feel like its hitting the rev limiter. What's happening is the computer is reseting for a quick second. Not exactly what you want when your an FI vehicle.
You'll want HP Tuners to write a new operation system for your vehicle, or go speed density.
We just hired Ian Thomson former instructor for the tuning school, and he excels in forced induction engines.
www.TampaTuning.com
Phil
Thread Starter
Racer
Joined: Jun 2012
Posts: 492
Likes: 1
Not really finding much info on HTP (at least in the gen 3 section). I really only have 2 main questions I need answered for now:
1) To change to the SD tune, will the 01 PCM work is a different year's needed?
2) To change to the SD tune, I believe you need to flash a new OS. Is this true and where can one find a copy of that OS?
1) To change to the SD tune, will the 01 PCM work is a different year's needed?
2) To change to the SD tune, I believe you need to flash a new OS. Is this true and where can one find a copy of that OS?
Safety Car
Joined: Jun 2004
Posts: 4,353
Likes: 22
From: Bella Vista Ca
Not really finding much info on HTP (at least in the gen 3 section). I really only have 2 main questions I need answered for now:
1) To change to the SD tune, will the 01 PCM work is a different year's needed?
2) To change to the SD tune, I believe you need to flash a new OS. Is this true and where can one find a copy of that OS?
1) To change to the SD tune, will the 01 PCM work is a different year's needed?
2) To change to the SD tune, I believe you need to flash a new OS. Is this true and where can one find a copy of that OS?
http://www.hptuners.com/forum/showth...ht=bar+upgrade