[canesr1]

to Dinan performance-wise? I'm not talking about pricing AT ALL. I'm not interested in piggy-backs or jb+ so please keep the flaming out of this post please.
I just want to know about performance. I currently have dinan stage2 and was curious about the giac flash.
Has anyone had the pleasure of driving both? I'm more interested in butt-dynos, track times, and real world driving then just talking dyno #'s.

Thanks all.

[enrita]

GIAC STage 2 is far superior than Dinan stage 2. It will Boost more for sure. No Flash tuner beside GIAC has managed to go beyond 14.5 psi since BMW only has maps up to that. Beyond that you need to rewrite them all in order to allow the car and all different parts of it to perform perfectly.

[alms21]

Originally Posted by FLA 335

S1 is SICK SICK SICK... WAYYY better than stock and with some bolt ons UH OH... sometimes i am scared to hit the gas in traffic... EKKK ... also on the track you will be doing some NICE times... i feel since dinan voids warranty anyways and piggy's arent for me... GIAC was the way to go... hit up Andrew@GIAC with ANY questions and he will take the time to explain things to you... depending on your mods you may want to wait for S2?? dunno...

i think only dinan adjusts the water pump speed when tuning though... that may be the only advantage... though if you have an oil cooler whats the worry?? lol... also with FMIC you will make sure your AIT drops so it helps as well...

happy and safe modding!!!

What is GIAC S1 putting out in HP and TQ....both at the crank and at the wheels?

[tom @ eas]

Originally Posted by alms21

What is GIAC S1 putting out in HP and TQ....both at the crank and at the wheels?

Crank numbers are irrelevant, power to the wheels is what counts. Here's a recent S1 tune we flashed in house, on a brand new 2010 335:



Stock max. whp: 267
Stock max. wtq: 273

GIAC Stage 1 max. whp: 318
GIAC Stage 1 max. wtq: 332



Rather than hearing what we think about the tune, take a look at customer testimonials instead: http://www.e90post.com/forums/showthread.php?t=337774

Stage 2 will be even better, we're testing for GIAC on our 135 project as we speak. Let me know if you have any questions on the GIAC Flash and I'll do my best to help.

[JayKay335i]

Based on whats been seen from testing, A Giac stage 2 should take your car pretty good, for less money.

They make great tunes.

[Irishace]

Any GIAC installers in Canada?

[bulldog_yyc]

pfaff

[cstavaru]

As a technical information, I read on this forum that the Dinan flash sometimes "fights the ECU on boost logic" while GIAC is well designed. To be honest, seeing how GIAC has managed to get 400whp out of a flash while no one has managed this, I think they "cracked" the ECU code pretty well and they know what they are doing.

[SIEN]

Originally Posted by enrita

GIAC STage 2 is far superior than Dinan stage 2. It will Boost more for sure. No Flash tuner beside GIAC has managed to go beyond 14.5 psi since BMW only has maps up to that. Beyond that you need to rewrite them all in order to allow the car and all different parts of it to perform perfectly.

Except for Evolve ... http://www.e90post.com/forums/showthread.php?t=342704

[huyner328]

Tom, were there any mods on that car? Those are some very niiiice numbers if stock! We ran some dynos the other weekend and my friend's car that has; Helix FMIC, AE Exhaust, v4 (6AT version since the 6MT beta wasn't out yet), and AFE Intake pulled about the same numbers on a Mustang. If I remember correctly, we had HP @ 50 set to 15 and our fan simulated 60-80mph on a highway.

[tom @ eas]

Originally Posted by huyner328

Tom, were there any mods on that car? Those are some very niiiice numbers if stock! We ran some dynos the other weekend and my friend's car that has; Helix FMIC, AE Exhaust, v4 (6AT version since the 6MT beta wasn't out yet), and AFE Intake pulled about the same numbers on a Mustang. If I remember correctly, we had HP @ 50 set to 15 and our fan simulated 60-80mph on a highway.

The 335 is 100% stock other than a Macht Schnell panel filter, this car roilled in with very very low mileage on the odometer. These types of numbers are typical for GIAC S1 flashes.

Obviously, the power numbers will increase as other parts are upgraded.

[tom @ eas]

Originally Posted by canesr1

to Dinan performance-wise? I'm not talking about pricing AT ALL. I'm not interested in piggy-backs or jb+ so please keep the flaming out of this post please.
I just want to know about performance. I currently have dinan stage2 and was curious about the giac flash.
Has anyone had the pleasure of driving both? I'm more interested in butt-dynos, track times, and real world driving then just talking dyno #'s.

Thanks all.

Here's our 135 client that just posted his experience this morning coming from a Dinan tune:

Originally Posted by Pukulan

I wanted to give a quick update on the GIAC stage 1....

First, coming from a previous tune on my 335 (Dinan tune) and a M3 (Dinan tune).

I notice with the 135 (GIAC stg-1) the boost/throttle is more apparent across the whole RPM range and comes is there when you need it. (135 Stock with Macht Schnell drop in filter)

Although, Dinan gave me a stronger push once it reached the 4500 rpm range it wasn't noticeable till then. (335)

Both tunes are great.... Props to Tom @ EAS for providing the GIAC stage 1 tune

Thread can be found here: http://www.1addicts.com/forums/showthread.php?p=6622720

[htoudiee]

This is my car and Tom is correct. Just a drop-in filter and the car had ~1000 miles on it. The flash could not be more perfect. There are no flat spots, no sudden surges and traction is awesome. You don't go off spinning 1st and 2nd gears like crazy (which makes you slower) off the line if you launch it right.

On a side note, I have now tested the car with race gas and I can say that GIAC gets adapted to the race gas very well and noticable as well as 91.

HT

Originally Posted by huyner328

Tom, were there any mods on that car? Those are some very niiiice numbers if stock! We ran some dynos the other weekend and my friend's car that has; Helix FMIC, AE Exhaust, v4 (6AT version since the 6MT beta wasn't out yet), and AFE Intake pulled about the same numbers on a Mustang. If I remember correctly, we had HP @ 50 set to 15 and our fan simulated 60-80mph on a highway.

[skim7x]

hmm... so GIAC stage 1 has less power than the Dinan Stage 2... what are the numbers for GIAC stage 2?

Edit: ahh I found a dyno... 423rwhp and 437ftlb... with a bunch of boltons, though (FMIC, DP's, Exhaust, hi-flo cats, METH)

[rolling18]

Originally Posted by skim7x

hmm... so GIAC stage 1 has less power than the Dinan Stage 2... what are the numbers for GIAC stage 2?

Edit: ahh I found a dyno... 423rwhp and 437ftlb... with a bunch of boltons, though (FMIC, DP's, Exhaust, hi-flo cats, METH)

wow you got those #'s from a GIAC??

[Garissimo]

Originally Posted by cstavaru

As a technical information, I read on this forum that the Dinan flash sometimes "fights the ECU on boost logic"

I honestly don't know what that is supposed to mean. The Dinan tune *is* the ECU, it's not an external processor altering inputs and outputs. I can tell you having put 8,000 miles on the tune, there is no evidence of any sort of "conflict" going on behind the scenes in the way the car drives. There are zero hiccups, stutters, oscillations, etc. in power delivery no matter what the throttle input and no matter what the temperature outside. I'm sure the GIAC tune is equally smooth .

[enrita]

Originally Posted by Garissimo

I honestly don't know what that is supposed to mean. The Dinan tune *is* the ECU, it's not an external processor altering inputs and outputs. I can tell you having put 8,000 miles on the tune, there is no evidence of any sort of "conflict" going on behind the scenes in the way the car drives. There are zero hiccups, stutters, oscillations, etc. in power delivery no matter what the throttle input and no matter what the temperature outside. I'm sure the GIAC tune is equally smooth .

exactly no flash fights the ECU ..... only piggies do.

[htoudiee]

Originally Posted by skim7x

hmm... so GIAC stage 1 has less power than the Dinan Stage 2... what are the numbers for GIAC stage 2? ...

Not sure how you draw this conclusion but I did a search and here is what I found for the Dinan and GIAC:

Dinan promises 384hp and 421 peak torque at the crank with their exhaust.

Below are a few dynos of folks here from their Dinan S2:

• Dinan S2 and drop-in = 311 whp at the wheels (Dynojet)
  
• Dinan S2 = 303 whp and 335 peak toque (Dynojet)
  
• Dinan S2 + Dinan Exhaust = 310 whp and 347 peak torque (Dynojet)

and, some GIAC tuned cars on Mustang dyno:

• GIAC S1 + Catback = 331whp and 336 peak torque (Mustang dyno)
• GIAC S1 + filter did 318whp and 332 peak torque on a Mustang dyno.

... seems like Dinan even with a cat-back is having less peak powers than GIAC. We all know it's not about peak power and the area under the curve also counts which seems to actually be very good on both tunes.

My 2 cents.

[enrita]

and considering those Dinan results are on Dynojet you can at least remove 20 rwhp straight away compaired to a Mustang dyno that reads more realistic numbers on the power put on the street.

[ClarkGriswold]

And isn't GIAC doing it with less boost? Maybe I'm wrong, but I thought I read that when it first came out.

[alms21]

Thanks for the info Tom. My recently purchased '09 E90LCI 335 has 8k miles on it. It seems that it would make sense to wait until after my 10k mile service to get the GIAC done, correct? Otherwise, I would have to "re-set" the ECU back to stock before going in after just 2k miles.

Another question, will it be a simple "retune" of the current S1's for the S2 and what will the price be?

[enrita]

For S2 you need to modify the car a lot. For the S2 boost levels you need:
- upgraded intercooler
- Downpipes
- an open filter
S2 is a completely new reflash than Stage 1