With it on your warrantee is toast if something goes wrong.
Uninstall it and see how it runs and if the dealer has to refresh it back to stock to make it happy...

I guess I just like taking $3,500.00 mods off my car and bagging them..
But hey it's your car enjoy..

 

I had the Dinan stuff on my M5 and BMW didn't void the warranty. They replaced a HPFP and also replaced the fuel pump in my gas tank under warranty and that was with the Dinan piggyback on. They have to prove the piggyback caused the problem in order to refuse to do work under warranty. Furthermore, your claim that the car adapts out the effect of the piggyback would moot the warranty issue anyway. If the ECU is so smart that it knows there is a piggyback and adapts the effects out then why would the warranty ever need to be voided? After all, according to you, after some period of time, the piggyback is just an expensive piece of electronics doing nothing because the ECU adapted it out.

 

An in tank fuel pump and a toasted big buck engine are two different things all together...What's a HPFP ?

Like I said it's your car.

 

High Pressure Fuel Pump. Porsche has them too. What is a toasted big buck engine? What kind of failure are you supposing?

 

This is a bit of gray area. The way it works is like this, there's basically 3 types of scenarios:

1. If your car has a failed fuel pump, or a broken window motor, or something of that nature, the decision whether or not to warranty it can be made at the dealership level. The parts are replaced and the old ones just thrown away. In this case, your dealer won't care if your car has a piggyback installed because there's no negative consequences for them.

2. If a larger part fails...like a transmission for example, the warranty decision might still be made at the dealership level, but the broken transmission will be sent back to the manufacturer for analysis. At this level your service department might be a little hesitant to help you since you have a piggyback, but most probably still will be cool about it, since they'll get reimbursed.

3. You have a large catastrophic failure...like your engine throws a rod through the case. The manufacturer is DEFINITELY sending a representative to analyze the car right in your dealer's service department. No way in hell your dealer is standing behind you on this one...they're throwing you right under the bus.

 

#3 is going to happen if you abuse the car and shouldn't have anything to do with modding the car. What are the circumstances under which #3 happens if it's not a warranty event? Pure and simple abuse, too many track days and too much time at the higher end of the RPM band, running the car over temp all combined. In addition, failure to have the car regularly serviced could do it and that wouldn't be covered by warranty.

I got an engine replaced by Lexus in a LX470 under warranty for blowing smoke. I bought it off lease with 28k miles on it and took it in for service 7 times during the next 17,000 miles. Actually it was my wife that took it in. Anyhow, they never changed the oil or did any of the recommended services on it during that time and then tried to blame me. I told them no way could they justify not telling us when there was a service interval if the car had been in 7 times in two years. Hell, I even took the car in before a long road trip to Colorado and told them to change the oil before the trip. Apparently they did it then but never after that one. Lexus agreed that they would cover the new engine if I just paid for what the cost of the recommended services were that had been missed. I agreed to that, it was about $1400. Lot's less than $10,000 for a new short block. That was back in 2005 and I had bought the car in 2003, it was a 2000 model.

I have heard Porsche is pretty reliable. I didn't have great luck with BMW and I owned four of them. Only one had no problems and I traded it for my CTTS last summer, it was a 2013 X5 5.0 with 22k miles. So far so good with my Porsches.

 

#3 can absolutely happen, and has happened plenty of times, because of aftermarket programming that doesn't adequately make use of existing safety features in the factory software. I have seen, with my own eyes, blown engines as a result of knock sensors turned off, rev-limiters raised to 9000 rpm's, and a few other awesome feats of software writing. Trust me...bad tuning CAN kill your motor.

A piggyback, by it's very nature, is one of the times where you run this risk. The entire functionality of the piggyback system is based upon altering input signals to the ECU. "Tricking" the ECU is very scary when you start to think of all the potential problems that could arise from even a slight malfunction in the piggyback unit itself.

 

I think we have been down this path before. You know who called me and you and we don't have to do this again. I have a good product made by a reputable company and I have actually talked to the owner. I trust his products and am confident he will stand by it if there are any such issues. Heck, they liked my exhaust video so much on You tube they used it as the one to advertise their product.

 

GIAC, ECU based flash >>>> piggyback

 

When I brought my car into Porsche to fix a coolant system warning code for a failed vacuum solenoid issue they had to remove the piggyback and reflash the ECU back to stock in order run their diagnostics through the OBD port or my warrantee was void....

You can defend the piggyback purchase till the moon falls from the sky, leave it in and see how well you do when the **** hits the fan..... Try removing it on the side of the road while waiting for a tow truck to the dealer....Good luck with that

 

So your warranty was voided then? Is that what you are saying? I have no concerns about taking the car in for a warranty repair with the piggyback on there. I am not covering anything up.

 

The engine/drivetrain coverage "would be void" if I kept the piggyback installed.

I bought my car slightly used and it was installed at the time of purchase.
I put on 1,200 mi. of hard canyon driving before it needed to go to the dealership for repair and its first service.
I have since put on another 1,000 mi. in the canyons and can not tell any difference in the car's performance without the piggyback..

They are a waste of money and it will void your warrantee when you need that warrantee the most....

Your butt dyno won't know a thing after a few miles of hard driving, only your wallet will know the loss..

 

Your piggy back was no good then. Here is mine before and after, demonstrated results without and then with the piggyback, headers and plenum. There was an increase of 6mph in trap speed and .35 in ET. I got an even better ET of 10.5 in another location but only a 129 trap speed because the DA was higher. The DA for these two runs was around 1800. It was midday in the same location. The Vbox gives unequivocal numbers but the butt dyno can tell the difference too, bigtime.

 

My GIAC flashed ECU has a code stored in it that says something like "The ECU VIN doesn't match the vehicle" (paraphrased). If I can see that with a Durametric cable in my garage, I'm sure it would raise eyebrows at the dealership.

To be fair, I don't have any proof that the code wasn't there before the flash and I haven't checked to see if it is still there after 2,500 miles of driving. It did seem like an obvious indicator that something was amiss. Honestly, I would have still done it even if I knew. This car has some serious ***** now and I'm at 4200 ft with 91 octane!

- Patrick

 

Dude you are missing the point, test your car now after the piggyback has been on a while and then remove it and test it stock again....Let me know what ya got then...

Enjoy going straight in your sports car without a factory warrantee..
I'll never understand why guys will buy an expensive sports car to run 1/4mi. when you can do better with a tuned Honda Civic for under 10K.