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Old 07-06-2013, 03:33 PM   #1
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Default Bought a used DIYPNP - First DIY Tuning

Hello All,

Well, I am SLOWLY researching and building my car to turbo it. After wanting just a VoodooII kit due to not needing to tune anything, I actually decided to pickup a DIYPNP.

The problem is this, I have absolutely NO concept or experience in tuning or anything at all, thus, I feel like I'm going to need to learn a lot and I'm hoping for your help.

I've done some minor research and it looks as though it's fairly straight forward just to start the car. Remove the ECU, plug the PNP in and then you have to set your timing and then start tuning.

With this said, I'm going to learn how to tune before I install my turbo kit on, that way, I don't end up blowing the motor if I'm playing around with tuning on the kit.

Other than the stickied threads, are there any additional videos or reads that will help me understand the basics of tuning and such? Are there special tools that I need to purchase? From a video that I watched, it says I'll need a timing light to set my timing first before tuning.

Feel free to flame me, I'm just trying to learn.
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Old 07-06-2013, 06:57 PM   #2
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Before starting anything you need to make sure you know exactly how your DIYPNP has been wired up.

Firstly, is it setup for your year/engine? Secondly, how has the external DB connector been wired up? You'll have to ask whoever built it or crack it open and tracing back the connections.

Also, has your DIYPNP got Seq Injection addon board?

Next, install a WBo2 with signal feed going to your ECU location, and a Vac feed tube from manifold to ECU location to feed the DIYPNPs MAP sensor.

If you are replacing the factory AFM, you'll also need to install a Air Intake Temp sender in the intake pipework, and run wires to the factory AFM plug. DIYPNP install guides has the required info for that.

Dave
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Old 07-06-2013, 07:16 PM   #3
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Quote:
Originally Posted by ManicGTI View Post
Before starting anything you need to make sure you know exactly how your DIYPNP has been wired up.

Firstly, is it setup for your year/engine? Secondly, how has the external DB connector been wired up? You'll have to ask whoever built it or crack it open and tracing back the connections.

Also, has your DIYPNP got Seq Injection addon board?

Next, install a WBo2 with signal feed going to your ECU location, and a Vac feed tube from manifold to ECU location to feed the DIYPNPs MAP sensor.

If you are replacing the factory AFM, you'll also need to install a Air Intake Temp sender in the intake pipework, and run wires to the factory AFM plug. DIYPNP install guides has the required info for that.

Dave
Hi Dave, thanks for the response.

This is the PNP that I purchased is used from a guy who used it on his 2000 NB as well, so as far as years go, both our cars match. The previous owner says he purchased this kit (DIYPNP Nippon Denso 76pin Unassembled Kit DIYAutoTune.com) and got the sequential injector kit as well (DIYPNP Sequential Injection Kit DIYAutoTune.com). Lastly, he told me that I will also be getting the IAT sensor (GM Open Element IAT Sensor with Connector DIYAutoTune.com) as well as telling me that the guy who performed all the work (Jeff_C) also did the work in regards to the alternator to keep the NB alternator. Finally, the previous owner said MS is already configured and ready for a AEM UEGO as it has some wire out the back of it, so I'll be purchasing that to hook into it to monitor my AFRs

What exactly is the DB connector you are referring to?
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Old 07-07-2013, 11:15 AM   #4
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You have done some minor research but do some major research before attempting to install this on your car first. The DIYPNP is a great piece of equipment for many reasons and one of the best reasons is its ability to adapt to upgrades you make along the way. Therefore, no two of them may ever be jumpered the same for a particular year car. Its plug and play but only from the perspective that you don't have to hack up the wiring harness for the DIYPNP to be installed on the car, just simply plug it in. Go to the link you have above and find the start up map for your vehicle and read it until it makes sense. Also, just for educational purposes, look through all of the documentation of how to build it. It might answer questions you didn't think to ask.

The DB connectors are on the opposite side of the harness connector. They are used for extra ins and outs. I believe the DB9 is used for communicating with the EMS. The DB15 can be used for anything. For example, my DB15 is being used for feeding my VVTuner, COP setup, and input from my WBo2.

When I originally put my DIYPNP together you could easily swap between the factory EMS and my DIYPNP. I did this a lot as I was learning to tune with the DIYPNP while being in a class that didn't allow the EMS change. After going up a class, I went with the DIYPNP exclusively and have made several changes to it (and the car) so that there is no going back to the factory EMS.
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Old 07-07-2013, 11:45 AM   #5
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Thanks Hector.

This tuning is something that I'd like to read up on because it sure something I am clueless on right now.

In order to change the settings, you'll also need to purchase the TuningStudio MS software from EFI correct? Within there, it looks as though there is a "self tune" type option in which you record logs and then the software itself will make updates to your map. Is this something the majority of the people do to get their base map down and then make their modifications from there?
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Old 07-07-2013, 11:52 AM   #6
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Yeah the thing with the DIYPNP is that you must first confirm you have everything jumpered up correctly and then start tuning. I hate to sound like a broken record and you might be all good to go, but just check everything first before attempting to run the engine. But yes, buy TS and use it to tune. The autotune feature makes changes on the fly to your preprogrammed AFR table commands. This is great but obviously there is more to tuning then just this but at least this will help get you to a safe tune if all is well.
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