REVO vs. APR

[ddark13]

Thinking of getting my 2.0T chipped this weekend. Just curious how the REVO and APR chips compare in terms of speed and smoothness? Also, are there any other companies that are as reputable/desirable?

Thanks.

ps. how important do you think it is to go w/ a forge diverter valve??

[rayiish]

absolutely everyone is going to tell you to search cause there are multiple threads on this.

[Jersey Stephen]

search

[Auditude2.0T]

I would go with which ever dealer is nearest you. I love me APR but have also heard great things about REVO too.

[Kievskiy]

GIAC or APR or MTM....those are the ish !

[DoThisMyWay]

Unitronic!

[Jersey Stephen]

Revo

[Auditude2.0T]

Revo

So you changed ur first post to search and added another post that says revo. interesting.

[Six Speed Turbo]

So you changed ur first post to search and added another post that says revo. interesting.

Next post will be APR

[RedS-line]

search. both have fans. do a free* test run of each and decide for yourself.

[Vito Roma]

Apr

[4RingRook]

Phew, its about time someone posted a comparison thread on ECU upgrades.

I've been dying for some info on this!



Clearly you did not search. There are millions of threads on this topic. Go with the dealer closest to you. Each person will be partial to theirs. For any suggestion made, you'll get 5 "thats the best", 5 "x was better.."

All else fails, and you have lots of tuners around your area, get a trial flash and see which you like.

[CardNation]

Go with the dealer closest to you.

Best advice posted on a daily basis.

[GEkido]

The ultimate battle between software I think was somewhat settled in this thread:

Purpose
Conduct data logs and dyno testing of GIAC, REVO, and APR resulting in the most appropriate software for my 2005.5 Audi A4 2.0T Quattro 6 speed manual.

Approach

Conditions
The data logs were conducted using a Ross Tech vag-com HEX+CAN USB interface with the Turbo button enabled. A Mustang all-wheel-dyno, located at Vivid Racing, was used for the horsepower and torque measurements. Chevron 91 Octane was used through out the whole testing process. Each software flash was on the car for two weeks before it went to the dyno. The fuel pump installed on the car is the "B" pump. There are no modifications other than the software. All data logs were measured on the same road going the same direction. The logs were conducted in 3rd gear starting at 2500 RPM's followed by WOT until redline (6800 RPM's).

Software
GIAC was purchased at Evolution Motorsports, REVO at 20 Valve Tuners, and APR at Billy Boat exhaust. The GIAC was purchased and soon followed by a full refund with no hassles. 20 Valve Tuners also, refunded the full purchase price with no hassles. The APR was purchased since the timed trial would have expired before 2 weeks were reached (they will refund money up to 30 days). APR was tested using the 91 octane program. GIAC was loaded preconfigured for 91 octane. The REVO flash was set with timing at 1 and boost at 6 (set by 20 Valve Tuners).

Results

Air:Fuel - block 31 (calculated by Lambda actual * 14.7)




Fuel Rail Pressure - block 106 note check scale it is not 60 - 120




Boost - block 115 (calculated by (boost actual - 920) * .0145) note 920 is the pressure inside the turbo at idle here in Arizona.




Timing correction Factors (all cylinders) - block 20




Timing - block 11




All the exhaust gas temperatures were within normal limits at or below 810 degrees C.

Dyno - note all the dyno numbers are uncorrected. Corrected numbers will be here soon as vivid racing fixes there printer.

APR vs Stock


GIAC vs Stock


REVO vs Stock


order top to bottom = APR - REVO - GIAC


Analysis and Conclusions
The testing went very well. There were many miles driven, a lot of time spent, many risks taken and much money blown, but I enjoyed meeting all the tuners and talking with the software companies. I am in no way affiliated with any software company, and did my best to keep the results fair and even. This report is my personal doing that I am nice enough to share with everyone with hopes of creating some very good technical discussions. I drove way to many miles (at least 110 miles each way 5 times) and spent too much money to have a pissing contest because of personal preferences. Not to mention that I beat the piss out of my baby. I went WOT in the last 6 weeks more than most people will in their A4's life. I am sorry baby... please forgive me!

That being said - I want to thank Mitch at Vivid Racing for doing all my dyno runs, Chris at 20 Valve tuners for loading and adjusting the REVO software, Anders at Evolution Motorsports for loading the GIAC, and Eric and Billy at Billy Boat exhaust for flashing my ECU with APR (and thanks to everyone for flashing me back to stock). If anyone is in the Phoenix area please pay these guys a visit - they were all good to me. Thanks again guys!

In the future I plan on testing new software revisions along with some hardware modifications. GIAC and APR informed me they were testing new software products at the time this article was written.

My personal feelings (yes opinions) not meant to start a pissing contest, just what I felt. APR felt very smooth, so smooth I was surprised at the power it made. APR has the smoothest shifts (don't seem to loose power between shifts). The REVO has a blast of torque that can be felt, but doesn't seem to hold its power as long. The GIAC felt similar to stock, but not as smooth (kind of choppy).

My rating
1. APR
2. REVO
3. GIAC

[RedS-line]

the above repost thread is awesome. i felt let down that apr beat out revo since the reported website hp tq numbers are higher for revo.then again, i wonder what differences like 93 octane and tweaks to the boost / timing may bring to the table....