Jetta TDI 2009, Do the chips help
 

Jetta TDI 2009, Do the chips help with horsepower increases and improved gas mileage, if so which one is good or the best.

The counter points I have heard prev, was if you could improve gas mileage by 5 mpg, for $200-400, would VW, do this themselves.

Are there any risk with using chip, ie blowing you engine

Don't play with the chips if you want to keep your engine. Those chips that make you magically `save fuel` just screw up the fuel flow, which makes your engine run lean and could cause problems. Those chips that claim better HP screw up the fuel flow (Notice a trend?) and dump more gas in to make it more rich, which can again cause more problems.

Your engine is tuned to the chip it left with from the factory. I've seen these magical `chips` that claim better mileage or HP but aren't even wired with electricity.

https://answers.yahoo.com/question/in...8173624AATrX3H

https://www.tuning.wanadoo.co.uk/chips-and-chipping.htm

https://www.thumpertalk.com/forum/arc.../t-609247.html

https://forum.astraownersnetwork.co.u...ad.php?t=42019

https://www.ford-trucks.com/forums/60...ip-a-hoax.html

Save your money, put it into another account, earn interest, and just maintain your vehicles fuel and ignition system.

Actually they do fine, it is a Diesel and it won't run lean. If it runs lean it goes slower. I would start with bigger injectors first then a chip. you can get tuner chips that are tuned to your car. I am not sure with your newer car what they do. problem is that with the extra power you get a bigger FOOT and you want to go fast. My car is older diesel and with the newer ones I am sure people are modding it already for better performance and MPG.

Check this site for all of your TDI questions they know best.

https://www.tdiclub.com/

later

erick

Doesn't apply to VW's. Chipping has been a common upgrade on all VW's for years. Its not actually a "chip" but an ECU reflash in most cases. Plus, these cars are turbo and diesel. Its one of the first mods most people do with their vdubs. They range from 200-500. Link above to tdiclub is a great start for more info.

I haven't gotten into modding my '09 (Yet?) but I must agree with the tdiclub.com recommendation. A wealth of info there. A much better place to ask this specific question.

thanks for the back up , herby and Timbuck2. I think in many cases that the little addon to many cars does not work. But some cars it does. Getting your ECU upgraded for your car in a tuners hands can benifit some cars. I think most cars all come with a set program from the factory. Programing your car for where you live, altitude, weather and such makes it run alot better. It is not a quick fix like the ones on tv that tell you that you can gain 50% better fuel milage! LOL! In the VW Diesel community there are several Chip companys that do a great job. Some you can send the info over the internet and the company will tune it for you!

Injectors well at least on my old 01 jetta TDI with 90 hp and 155lbs of torque can boost it to 110 hp and over 200lb of torque! Torque is what matters in Diesels. SPelling of it does not! LOL!

Erick

For 09's, there isnt really much out there. I would hold back until modders figure out the exhaust system as a chip that pushes more fuel into the engine, also creates more soot that the DPF has to deal with and its not designed for that much.

Im eagerly awaiting my warranty to expire and the tuners to figure out how to mitigate the dpf problems.

True, with the new clean Diesel cars the emission of the tail pipe will be a tricky to over come. but I am sure there are the True Gear heads outthere working on beefing it up right now. Keep checking the performance forum for details.

VW Junky thank you for pointing out that a Diesel can't "run lean" as it is an impossibility in a compression ignition engine to do so, like you said all that a "lean" mixture will get you is reduced RPM's.

I have a question, I've read that the TDI chips advance the timing of the engines, this too seems to be impossible since there is no spark plug ignition to advance. I assume that the writers are talking about advancing the fuel injection pulse, is that correct? If so, it is still difficult for me to grasp how this would change the "timing" of the engine unless it is spraying earlier in the exhaust cycle which allows additional uncombusted fuel / air mixture to exit through the exhaust system to reduce the residual combustion byproducts left in the cylinder. That to me would indicate additional fuel requirements so is this basicaly a horsepower bump, at the expense of short term fuel economy penalties?

I don't know much about modern computer controlled diesels, but I used to work a fair amount on older generation marine (boat) diesels and think I have a fair grasp on the concept.

Thanks for any enlightenment that you can share, I appreciate it and want to learn more about this technology.

No problem, I think timing is injection timing on diesels. Keep reading on

https://www.tdiclub.com/

they are crazy about TDI's and other diesels. In the forum section there is so much info you can read for weeks!

If you find out any good bits for milage please post them here. I just don't have time to read it much. 3 kids, and honey due list to no end.

late

Erick

I have a Rocketchip 2/3 in my '99.5 ALH. It is fantastic. MUCH improved performance with virtually identical MPG; however...

With a 2009, I'm planning to wait until the 50k warranty is up to even investigate chipping. The performance on the 2009s is good from the factory, so there's less value in "chipping", and I think there's less room for improvement due to the higher turbo boost levels in the base ECU program.

Well, the warranty isnt 50k, so your wait will be 14k shorter.

Timing in TDI's is fuel timing, at least that is my understanding.

Say a stock car injects fuel for .1 seconds total starting at 5 degrees from TDC, (im making up numbers completely) a chip can start injecting fuel at 7 degrees from TDC for .15 seconds for instance, giving you more fuel and more power.

A chip can also tell the turbo to supply more boost (more boost=more power usually), or a number of different things that people like me shouldnt be messing with. Luckily, theres people like Jeff of RocketChip or Alligator (or however they wanna spell it), or I think theres another company or two.

But for 09's, your out of luck right now, the exhaust system is too new. I believe the reason there isnt a rocketchip out right now for 09's is the fact that people are idiots and will blame the chip WHEN their DPF needs to get replaced in 6 months. Yes, there is a reasonable demand to put these things on the track, but again, people are idiots :)

Also, the TDICup is using the exact same car minus a couple parts as the ones we own now. Except their engine is 170hp, ours is 140. Some people have gotten the 90 hp earlier models to put out close to 200, I would bet that 200 hp is a single chip away with the 09. And if you get crazy enough to spend another car on this car, id bet 250 isnt too hard.

Advancing TDI timing is simply advancing the injection pulse (as stated above) - this gives the engine more time to burn the fuel (thus extracting more work out of the fuel and reducing smoke). It does not inject more fuel.

Timing can be adjusted in small amounts via the ECU and large amounts via the IP. In most TDIs, the ideal timing is just below the "advanced" bar in VAG-COM - so the timing is considered advanced as as VW is concerned, but for most of NA that's about where it should be stock.

A lot of the tuning that's done on TDI's (at least for the ALH engine) is done to overcome the ridiculous restrictions and hinderances placed upon Diesels in NA. The laws and regulations more often do more harm and good, so chipping your TDI is doing everyone a favor in terms of environmental and performance issues. A properly tuned TDI will be more fuel efficient than a stock tuning in NA - in fact, if you take a European ECU and drop it in a NA TDI, you'll see an immediate MPG and power increase with no other changes.

I Have a 2001 Gold TDI, I now call it TDR.

My base power plant provides 90hp after I added my PowerBox I now have what the 2007 Jetta models have 110hp.

My mileage went from 750-800km in the city to a solid 850km. On the highways was the best part.. now i get close to 1200km.

I bought my PowerBox of a dude on Vortex for 175US, best money I ever spent!