[s.myrr]

So finally I got my car flashed with GIAC's Stage 1 yesterday, along with the flashloader (with stock mode included free of charge). Thank you to Cantrell Motorsports and Carb Connection (both in Kirkland, WA) for taking good care of me. I did have to wait for GIAC to make a file for me (i'm MT, they only had one for AT) but the wait was worth it.

I can agree with most other GIAC users in questioning why I waited this long to get a tune. The flash is amazing, better than stock in every way. Power aside, the way the car drives has been drastically improved. 1st and 2nd are so much smoother than before. This is the way the car should have come from the factory, save the new traction issues I have. Granted, it is raining right now, but the shortcomings of the stock rubber/wheels are readily apparent. Per the dyno results I picked up about 54/55 hp/tq on average after a baseline run. The newfound power and torque makes the car much more enjoyable...and makes me want more! We also did a run with the stock mode to see how it compared with the baseline, the results speak for themselves. Amazing how close GIAC got this to oem specs.



My car is stock with the exception of replacing my resonator with a Magnaflow x-pipe. It seems that my exhaust did get a bit quieter after the tune, so I may do the golf tee mod tomorrow to see how it sounds...maybe it's in my head, who knows? The flashloader works as it should, and switching on the fly is super easy although I don't think anyone would really need to do this. For dealer visits, the stock mode will be nice.

All in all, a big thumbs up to GIAC! I have the Dynojet files here, so if anyone wants to see the graphs in a different way (correction etc) I can do that. Thanks to everyone else who posted their experiences etc, and for steering me in the right direction!

[forza1976]

excellent gains buddy, +1 for the baseline. Nice work

[techlogik]

Cool. Had about the exact same gains. You are MT or AT?

Seems the AT has more drivetrain loss by a few HPs...maybe it is just the dyno I was on.

http://www.e90post.com/forums/showthread.php?t=433960

[s.myrr]

MT.

[BobS]

Nice, glad you like it. The best part is the car won't throw any codes! I just had the dealer flash over my stg 1 so i'm going back to get it flashed again. Going back to stock is terrible!

[Sniz]

I didnt think stg 1 ran 14psi+, but that is making good power.

interesting how rich they have it running too. (rich for DI motor)

[FLA 335]

yea i agree with sniz... stg 1 is suppose to yield something like 13.6x max.. but i guess you didnt hit the tq. target so it boosted more?? i'll wait for giac to chime in...

[s.myrr]

Regarding the AFR - we did notice that it was running rather rich after the tune. The guys at the dyno shop speculated this was an added margin of safety, but he seemed to think it was a little over done. I don't know enough about this car to make an opinion either way, but to error on the safe side is better than not I suppose. Maybe GIAC will comment on this as well.

Either way, the tune is tons of fun. I didn't think that +50hp would be that different but I was wrong. It's easy to get caught up with the big gains seen on this board with the Proceed/JB/Giac Stg 2 tunes... was almost expecting stage 1 to be sort of mundane. Did the golf tee mod yesterday for about an hour, and then back to stock (too much drone on freeway).

[techlogik]

The guys at ZFever in Tampa when they saw my AFRs said that is pretty much how they tune a car. The do mostly Nissan/Z transplants, turbo projects, swaps and etc...and have special tuning products for the market. Many of their tuning is custom on the dyno....

They seemed to know what they were talking about.


Here is my Stage 1 tune, happens to be a corrected HP numbers..but the AFRs are shown.







And their "stock tune" uncorrected.

[Sniz]

Originally Posted by techlogik

The guys at ZFever in Tampa when they saw my AFRs said that is pretty much how they tune a car. The do mostly Nissan/Z transplants, turbo projects, swaps and etc...and have special tuning products for the market. Many of their tuning is custom on the dyno....

They seemed to know what they were talking about.


Here is my Stage 1 tune, happens to be a corrected HP numbers..but the AFRs are shown.







And their "stock tune" uncorrected.

yes mid/high 11's AFR is fine for a F/I motor but w/ DI its typically going to be tuned higher than that? no?

did GIAC forget this motor is DI and just tune like they normally do?

added safety is a good thing, but if its costing throttle response and power too much that doesnt help.

[old account 1]

Originally Posted by s.myrr

So finally I got my car flashed with GIAC's Stage 1 yesterday, along with the flashloader (with stock mode included free of charge). Thank you to Cantrell Motorsports and Carb Connection (both in Kirkland, WA) for taking good care of me. I did have to wait for GIAC to make a file for me (i'm MT, they only had one for AT) but the wait was worth it.

I can agree with most other GIAC users in questioning why I waited this long to get a tune. The flash is amazing, better than stock in every way. Power aside, the way the car drives has been drastically improved. 1st and 2nd are so much smoother than before. This is the way the car should have come from the factory, save the new traction issues I have. Granted, it is raining right now, but the shortcomings of the stock rubber/wheels are readily apparent. Per the dyno results I picked up about 54/55 hp/tq on average after a baseline run. The newfound power and torque makes the car much more enjoyable...and makes me want more! We also did a run with the stock mode to see how it compared with the baseline, the results speak for themselves. Amazing how close GIAC got this to oem specs.



My car is stock with the exception of replacing my resonator with a Magnaflow x-pipe. It seems that my exhaust did get a bit quieter after the tune, so I may do the golf tee mod tomorrow to see how it sounds...maybe it's in my head, who knows? The flashloader works as it should, and switching on the fly is super easy although I don't think anyone would really need to do this. For dealer visits, the stock mode will be nice.

All in all, a big thumbs up to GIAC! I have the Dynojet files here, so if anyone wants to see the graphs in a different way (correction etc) I can do that. Thanks to everyone else who posted their experiences etc, and for steering me in the right direction!

Great numbers and right on par with the gains we claim for your octane levels. Enjoy!

[old account 1]

Originally Posted by Sniz

yes mid/high 11's AFR is fine for a F/I motor but w/ DI its typically going to be tuned higher than that? no?

did GIAC forget this motor is DI and just tune like they normally do?

added safety is a good thing, but if its costing throttle response and power too much that doesnt help.

I am curious why you believe it should be higher than that.

We probably tune more direct injection cars than most anyone else in the aftermarket world, as we support nearly the entire line of direct injection Porsches (Cayenne S, Cayenne GTS, Cayenne Turbo (&S), 997.2 S, Cayman S DFI, 997.2 Turbo (&S), in addition to direct injection VW/Audis. We have found that these cars perform better on the rich side of the AFR spectrum.

[old account 1]

Originally Posted by Sniz

I didnt think stg 1 ran 14psi+, but that is making good power.

interesting how rich they have it running too. (rich for DI motor)

Depending on temperature/air density, stage 1 will boost between 13.2 and 14.5 psi. The normal range is 13.7, though. As previously noted on here, it will limit boost based on the ability to meet torque requests.

[I335]

Noticed the OP said he did some switching on the fly. Is this OK to do? Any potential harm other than taking your eyes off the road?

[old account 1]

Originally Posted by I335

Noticed the OP said he did some switching on the fly. Is this OK to do? Any potential harm other than taking your eyes off the road?

No harm. The switcher is more than capable of switching on the fly. You will notice that Mr. 5 did the same thing in his video. We simply don't recommend it because it is a potential hazard when driving.

[I335]

Got it - thanks!