Hey everybody. I decided to do my own 2.0t software comparison. After seeing the numbers of the Giac car, I knew I needed my own answers. I've used Giac on my '97 GTI VR6 before and after cams and all through it's life. I then used them on my wife's '04 Allroad 2.7t and my '02 TT 225, using their stock, race, valet, kill, and 91 flashloader. They've now finished my Del Rio GT28RS STGIII kit!!! They know their stuff, they don't sell junk!!!!!!!! This is not a bash on anyone elses software or the guy who did the last comparison. This is me validifying my own questions with that original post.

I work in the industry for an Audi dealer so I used my co-workers car. She was cool enough to let me do this to her car. It is an '06 2.0t 6spd stick FWD. I had already driven the hell out of it, with the S chip, before the first 2.0t comparison was posted. The thing spun easily through 1st gear and pulled like a raped ape after that! So I knew there was more than a 1-2 hp gain from the S chip.

Interesting enough, we dyno'd it back then for a baseline. The car only had 500 miles and put down stock numbers in the 170s. You'll see it now, a few thousand miles later, puts down A LOT more stock!

What was tested?

APR
Stock
Giac S chip
Giac X chip

This is on 91 California junk gas too. ALL runs are the BEST of each file. No averaging just best.

I used APR since it is their current uber chip and would be a good comparison. And it was.

Unfortunately, I'll be going to Germany for work today. I mean unfortunately, because I won't be able to post other pics I have if you request them or answer questions for a week. BUT I'm going to drive the new Q7 through the Alps so I'm SIKED!!!!!!

I did gain timing numbers, intake temps, air fuel, boost levels along with whp and torque. Today I'm posting whp and torque.

After seeing these dynos I asked Giac their reasons for an S and X chip. I mean who the hell would pay for a lessor powered chip??? Turns out, for people with CVTs or warranty concerns might appreciate a bit more power than stock, but not the end all street terror.

For any of you planning to dyno your A4, make SURE you have lots of fans! We had the traditional fan in front and a 70mph fan for each intercooler. These cars drop hp big time with alittle less air. Turning off 1 intercooler fan gave an instant 10 whp loss. So keep that in mind for you own base and future runs.

I hope this helps you guys and gals pick your chips!!! Talk to you in a bit.

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It was their only chip out for quite some time so it's odd they now claim its for the CVT. Their B6 CVT chip makes a lot more than 10hp and 10tq. I'm guessing the S chip will see improvements as well if it is going to continue to be marketed as a viable chip rather than an initial version that it was. I wouldnt worry about the B pump versus F pump issue. The Hitachi specs for the pumps are identical and we are seeing four companies running turbo upgrades on the B pump with no issues. There are issues but it has nothing to do with the pumps. This has been addressed by many manufacturers. APR will have their latest version out soon to show this soon and MTM, Sportec, Abt, and Oettinger have their K04 kits out that run the B pumps great, with the additions of the changes they made to not run into fueling issues. Nice to see your results. Looks like GIAC has caught up to the competition for the next week or so ;) Seriously, great job with the testing. When you get a chance, please post the logs. That will be awesome info. If you can shoot them to me via email i'd love to see them. a4at151mph@yahoo.com cheers! Mike

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But the truth ;-)

Still a bit sad that they keep poking at the B vs F issue.

Dave

on their programming that was for release. What we havent seen from them is a program of theirs that gets the B pump to fail and not the F and in any consistent manner. That's because the differences they logged between the B and F was not very significant in that both failed under that programming test. All of the pumps will have slightly different tolerances and perform slightly differently. Unfortunately, it's not just the pump that is the limiter right now. Obviously if the F pump actually provided a significant amount more flow there would have to be a programming change (ala upgraded indjector software or FPR software) for it and there is none. You just swap them and go. It's a direct swap part. The difference is a safety bleeder to allow safer servicing of the units. There's already upgraded turbos running ok on them but some other things are done to get the power desired. cheers! Mike

I was interested in the performance differences in the software. I had the original software and no VAG tool, but I got the new VAG and the software feels better (no real way to judge from base software).

Originally I was told the B pump software was the only thing I could run b/c the fpr couldn't handle the other software (what I am currently running). I was told people were getting shuttering from the APR software being too high for what the first pump could handle. This could be all heresay, but I trust the shop that did my install.

you'll also find the OEM hitachi specs for each pump on that thread and a link to a chip comparo using the higher hp files on the B pump that were considered forbidden. You can aslo go to mtm online and see their 300+hp K04 kit that utilized the stocker B and F pumps. It's understandable the concerns you had, but I generally ask shops to provide me evidence of the problems they've seen rather than what they "heard" since many times they will come up empty when you ask them this. There certainly have been fueling problems that folks are concerned about however as we can see from the bigger turbo kits and the Hitachi specs, it's not as simple as replacing the B pump with the same specced F pump (remember no OEM Audi software change is needed when going from a B to an F pump). cheers! Mike

<ul><li><a href="http://forums.vwvortex.com/zerothread?id=2339563">Post on Vortex re. pump pressures.</a></li></ul>