Chipped cars ONLY!

[der Geist]

There is an in depth article in the June issue of 911 & Porsche World Magazine from the UK. You can get it at most Borders stores. It fetures and interview with REVO and their products and techniques. As you can see by my dyno sheets there is not a lot of HP to gained by getting your car chipped. At least not if it is naturally aspirated. The big gains are for the turbos where they can adjust the boost. If you look at my dyno though you will see that the tourque curve is very flat and I think the car runs much more aggressively especially in the lower gears. I did a DE at Mid Ohio 3 weeks ago and the car seemed to run a lot better than at my first DE. Could be a placebo effect though. With the REVO Select I can change the settings myself on a laptop and upload them. At my DE tomorrow I am leaving the trottle at 9 and bumping the timing to up to 5 (or 6) and the air/fuel to 9 since I will be running 94 octane. We'll see how she does.

Steve: You should call your GIAC dealer and ask what he set the parameters to. When mine left the REVO dealer they set it for optimized 91 octane which is almost the same as how it is configured from the factory. ???? I didn't really notice much of a difference either at first. I always run at least 93 octane and I noticed a difference after I got it home and reprogrammed it myself. If you always run 93 octane you should tell them that th

chaudanova: Thanks for posting that dyno. It's nice to have something similar to base it against. Was yours a 3rd gear run like mine? I'm curious because mine is so much flatter when compared to yours.

[chaudanova]

Originally Posted by der Geist

There is an in depth article in the June issue of 911 & Porsche World Magazine from the UK. You can get it at most Borders stores. It fetures and interview with REVO and their products and techniques. As you can see by my dyno sheets there is not a lot of HP to gained by getting your car chipped. At least not if it is naturally aspirated. The big gains are for the turbos where they can adjust the boost. If you look at my dyno though you will see that the tourque curve is very flat and I think the car runs much more aggressively especially in the lower gears. I did a DE at Mid Ohio 3 weeks ago and the car seemed to run a lot better than at my first DE. Could be a placebo effect though. With the REVO Select I can change the settings myself on a laptop and upload them. At my DE tomorrow I am leaving the trottle at 9 and bumping the timing to up to 5 (or 6) and the air/fuel to 9 since I will be running 94 octane. We'll see how she does.

Steve: You should call your GIAC dealer and ask what he set the parameters to. When mine left the REVO dealer they set it for optimized 91 octane which is almost the same as how it is configured from the factory. ???? I didn't really notice much of a difference either at first. I always run at least 93 octane and I noticed a difference after I got it home and reprogrammed it myself. If you always run 93 octane you should tell them that th

chaudanova: Thanks for posting that dyno. It's nice to have something similar to base it against. Was yours a 3rd gear run like mine? I'm curious because mine is so much flatter when compared to yours.

Hey Der Geist, sure thing, yes, mine was a 3rd gear run. Yeah, I've wondered about my torque curve as well. I think my hp did fairly well for a pretty much stock 2.7, though my tq curve seemed a bit fluctuating. Any ideas/thoughts on why this would be?

[der Geist]

Hey Der Geist, sure thing, yes, mine was a 3rd gear run. Yeah, I've wondered about my torque curve as well. I think my hp did fairly well for a pretty much stock 2.7, though my tq curve seemed a bit fluctuating. Any ideas/thoughts on why this would be?

I have no idea why they are so different. I found Randall's dyno after Che's headers & exhaust here: Performance Exhaust and Header for Boxster but his is a 2.5 so it's bound to be much different anyway. I think that we need a more experienced opinion here to answer that one for you. How bout it? I there anyone else who could post a comparison dyno or can tell us why that's fluctuating to that degree?

[steve00s]

Well, I asked about the "adaptive learning" and was told that I should feel the difference right away. I think what they originally meant was to try it for a couple of days before making up my mind. They also said that in their test drive before the installation there was a flat spot on the high end they experienced just before shifting from first to second and that flat spot was gone on their post-installation test drive. I had not noticed nor do I now think that I would have spent $950 for this product. I didn't expect much going into this so I'm not disappointed. This has been the least tangible modification that I have done so far. Everything else has provided some noticeable benefit but as much I would like to believe I'm not feeling it here. Porsche did a good job to begin with.

[Topless]

Originally Posted by der Geist

Hey Der Geist, sure thing, yes, mine was a 3rd gear run. Yeah, I've wondered about my torque curve as well. I think my hp did fairly well for a pretty much stock 2.7, though my tq curve seemed a bit fluctuating. Any ideas/thoughts on why this would be?

I have no idea why they are so different. I found Randall's dyno after Che's headers & exhaust here: Performance Exhaust and Header for Boxster but his is a 2.5 so it's bound to be much different anyway. I think that we need a more experienced opinion here to answer that one for you. How bout it? I there anyone else who could post a comparison dyno or can tell us why that's fluctuating to that degree?

Look at the range setting for different dyno charts. Yours is set to 0-225, Bisimoto's dyno is set 135-176. Bisi's is giving you a much more (5x) detailed look at the performance curve and is much more useful for performance tuning. Both charts give useful peak performance points.

The 2.7 motor max torque rpm has moved up from about 4.7k(stock) to 4.9K (chipped). It also looks like a narrowing of the torque curve(powerband). That narrowing of the powerband is where you get that extra "kick" feeling along with slightly higher max HP and torque. I'd say there is still some tuning work to do to get that nice big fat torque curve.

Below is the dyno chart Bisi did for his own 3.2 motor. The range setting is similar and it was the same dyno so you can compare apples to apples. It shows a fatter torque curve with higher max performance due to the larger 3.2 motor.
http://i4.photobucket.com/albums/y144/bisimoto/DeSnorked986S.jpg