Do I go Dinan S3 or Giac S2? chime in please

jzepeda · 03-03-2011, 01:53 AM

I currently have the Dinan S2 with Dinan CAI, IC, and BMW Performance Exhaust. I am now debating going to either Dinan S3 or Giac S2. I'm not sure about the piggy back systems, I feel every time I look in this forum someone is having some sort of problem with them. I have had the Dinan S2 tune for 4 years now not one problem, but now my warranty just expired and I want more power. I want to keep the reliability that I have had with Dinan but I'm affraid it will not be enough for me. I also want to try adding DP's and a Meth kit, also not sure if the Dinan tune can handle those upgrades. any opinions are welcomed.

EDIT - I mainly do street driving I go to the track maybe 1-2 a year.

Thanks,
Jorge

enrita · 03-03-2011, 02:20 AM

since you have a 07 out of warranty definetely GIAC stage 2 which is a more refined tune and allows you to boost a tad more than Dinan and costs way less. You need dps though either catted (but than you need to remove the midpipes cats) or catless (no need to remove the midpipes cats). Search Mr.5 posts he has collected a lot of data on GIAC.

jzepeda · 03-03-2011, 02:49 AM

Thanks I'll look for his post. I am leaning toward GIAC. Dinan S3 is an upgrade for me so it will run about 500 or so, GIAC will be about 1400.00 with all the tunes and controller. Dinan will be the cheapest route for me but not really sure how Dinan will handle the other mods, I just don't know how aggressive GIAC S2 will be for street use or Daily Driving.

Quote:

Originally Posted by enrita

since you have a 07 out of warranty definetely GIAC stage 2 which is a more refined tune and allows you to boost a tad more than Dinan and costs way less. You need dps though either catted (but than you need to remove the midpipes cats) or catless (no need to remove the midpipes cats). Search Mr.5 posts he has collected a lot of data on GIAC.

tscdennab · 03-03-2011, 06:13 AM

Your mods are better suited for Dinan S3 because you don't have catless downpipes. If you don't want any catalyst CELs, smog test problems, O2 simulator mess, etc. I would say get the Dinan S3, the $500 for Dinan will add to the car's resale value, since Dinan is respectable in the US. 408 crank hp is also on par with GIAC Stage 2.

If in the future you will find Dinan lacking power, you can always switch to GIAC S2 Race with methanol, etc.

dlbrooks18 · 03-03-2011, 08:13 AM

Go with Dinan S3 and see how you like it, since it's only $500 to upgrade..

Alpina_B3_Lux · 03-03-2011, 08:58 AM

Quote:

Originally Posted by enrita

since you have a 07 out of warranty definetely GIAC stage 2 which is a more refined tune and allows you to boost a tad more than Dinan and costs way less. You need dps though either catted (but than you need to remove the midpipes cats) or catless (no need to remove the midpipes cats). Search Mr.5 posts he has collected a lot of data on GIAC.

+1

I had a flash that is comparable to your Dinan S2 for a bit more than a year, and was basically in the same situation. I've now had the GIAC stage 2 for almost the same amount of time and - along with the additional modifications I did in the meantime - it's much stronger than the previous flash. I didn't have any problem at all with it, either, and GIAC also offers the possibility of a race flash that is adapted for meth injection as well as the mapswitching device, which is very practical.

Alpina_B3_Lux

scott@bmwhn · 03-03-2011, 09:04 AM

The Dinan wont support meth or down pipes, so if these are mods you would like to do then it may be worth switching to GIAC...if your not to sure, then i would pay the $500 upgrade and see if that sways your decision.

techlogik · 03-03-2011, 09:30 AM

If you are out of warranty get a Procede for the $600. That way it will clear codes automatically etc..GIAC/Dinan, won't clear anything and idiots lights will be popping up for sure unless you have an O2 sim...

WWM3 · 03-03-2011, 09:39 AM

GIAC Stg 2, Catless DPs, & O2 Sim.

Mr. 5 · 03-03-2011, 09:42 AM

I know for a fact that a GIAC stage 1 car will make more power than Dinan stage 3 given that the mods stay the same.
GIAC really is all that.
As I've said before, I have 93k miles and have been running GIAC for about 30k miles now and have had no issues whatsoever.

STONEY_M5 · 03-03-2011, 09:51 AM

Quote:

Originally Posted by scott@bmwhn

The Dinan wont support meth or down pipes, so if these are mods you would like to do then it may be worth switching to GIAC...if your not to sure, then i would pay the $500 upgrade and see if that sways your decision.

The dinan will support downpipes you just have to get reflashed when you put them on and since reflashes are free you have nothing to worry about. now meth is a different story you would have to research that but i dnt see why it wouldnt if it adapts to cooler iat's and race gas(100 octane)

Quote:

Originally Posted by dlbrooks18

Go with Dinan S3 and see how you like it, since it's only $500 to upgrade..

I was gonna do the upgrade but the dealer actually talked me out of it.

Quote:

Originally Posted by techlogik

If you are out of warranty get a Procede for the $600. That way it will clear codes automatically etc..GIAC/Dinan, won't clear anything and idiots lights will be popping up for sure unless you have an O2 sim...

Yea I have that problem now cause of the cats but you can get the o2 sim like he said or a cantool...

jzepeda · 03-04-2011, 12:39 AM

Thanks for all the info. I'll let you guys know what I decide. I will call both vendors tomorrow get some qoutes and see what they offer as far as satisfaction guarantee.

Thanks,
jorge

Mr. 5 · 03-04-2011, 09:28 AM

Quote:

Originally Posted by jzepeda

Thanks for all the info. I'll let you guys know what I decide. I will call both vendors tomorrow get some qoutes and see what they offer as far as satisfaction guarantee.

Thanks,
jorge

Also,
If you're in the Orange County area then let me know and I'll give you a spin.

jzepeda · 03-04-2011, 01:18 PM

Thanks, I might take you up on that offer. I'm near the 57fwy and the 60fwy.

Quote:

Originally Posted by Mr. 5

Also,
If you're in the Orange County area then let me know and I'll give you a spin.

jzepeda · 03-31-2011, 10:53 AM

UPDATE:

After weeks of google and forum searching I decided to go with Cobb Tuning. Although they are a new tuning option for BMW they will offer custom tunes for our cars as well as tuning software for the end user. I did not try the GIAC tune I'm sure it would have been a great tune. I also didn't want to get stuck with a second ECU tune that I will not be able to resell. If I decide to sell the car later, I can always revert back to the Dinan tune and sell the Cobb.

Thanks for everyones response.
Jorge

03-03-2011, 01:53 AM	#1
jzepeda Lieutenant 29 Rep 587 Posts Drives: 07 e92 Dinan Stage 2 Join Date: Apr 2010 Location: West Covina iTrader: (12)	Do I go Dinan S3 or Giac S2? chime in please I currently have the Dinan S2 with Dinan CAI, IC, and BMW Performance Exhaust. I am now debating going to either Dinan S3 or Giac S2. I'm not sure about the piggy back systems, I feel every time I look in this forum someone is having some sort of problem with them. I have had the Dinan S2 tune for 4 years now not one problem, but now my warranty just expired and I want more power. I want to keep the reliability that I have had with Dinan but I'm affraid it will not be enough for me. I also want to try adding DP's and a Meth kit, also not sure if the Dinan tune can handle those upgrades. any opinions are welcomed. EDIT - I mainly do street driving I go to the track maybe 1-2 a year. Thanks, Jorge
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03-03-2011, 02:20 AM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	since you have a 07 out of warranty definetely GIAC stage 2 which is a more refined tune and allows you to boost a tad more than Dinan and costs way less. You need dps though either catted (but than you need to remove the midpipes cats) or catless (no need to remove the midpipes cats). Search Mr.5 posts he has collected a lot of data on GIAC. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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03-03-2011, 06:13 AM	#4
tscdennab Banned 151 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	Your mods are better suited for Dinan S3 because you don't have catless downpipes. If you don't want any catalyst CELs, smog test problems, O2 simulator mess, etc. I would say get the Dinan S3, the $500 for Dinan will add to the car's resale value, since Dinan is respectable in the US. 408 crank hp is also on par with GIAC Stage 2. If in the future you will find Dinan lacking power, you can always switch to GIAC S2 Race with methanol, etc.
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03-03-2011, 08:13 AM	#5
dlbrooks18 Brigadier General 161 Rep 3,736 Posts Drives: e90 335i Join Date: Nov 2008 Location: Los Angeles iTrader: (2)	Go with Dinan S3 and see how you like it, since it's only $500 to upgrade.. __________________ 2008 E90 335
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03-03-2011, 09:04 AM	#7
scott@bmwhn Major 134 Rep 1,245 Posts Drives: Msport X3 Join Date: Mar 2008 Location: Houston iTrader: (3)	The Dinan wont support meth or down pipes, so if these are mods you would like to do then it may be worth switching to GIAC...if your not to sure, then i would pay the $500 upgrade and see if that sways your decision. __________________ 03' 525iT stick, 22' 530i Previous: 20' X3 M40i, 19' 740i Msport, 17' 430i GC, 15' Msport X3 28i, 15' Sportline X1 28i, 13' Msport 328i, 09' Msport 335i, 07' Msport 335i
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03-03-2011, 09:30 AM	#8
techlogik Lieutenant Colonel 70 Rep 1,565 Posts Drives: 2020 M340i Dravit Grey Join Date: Dec 2006 Location: FL iTrader: (2)	If you are out of warranty get a Procede for the $600. That way it will clear codes automatically etc..GIAC/Dinan, won't clear anything and idiots lights will be popping up for sure unless you have an O2 sim... __________________ 2020 M340i: Dravit Grey Mettalic. Loaded.
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03-03-2011, 09:39 AM	#9
WWM3 Lieutenant Colonel 968 Rep 1,900 Posts Drives: 2018 GT3 Join Date: Mar 2009 Location: PA iTrader: (9)	GIAC Stg 2, Catless DPs, & O2 Sim.
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03-03-2011, 09:42 AM	#10
Mr. 5 Modder Raider 753 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	I know for a fact that a GIAC stage 1 car will make more power than Dinan stage 3 given that the mods stay the same. GIAC really is all that. As I've said before, I have 93k miles and have been running GIAC for about 30k miles now and have had no issues whatsoever. __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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03-04-2011, 12:39 AM	#12
jzepeda Lieutenant 29 Rep 587 Posts Drives: 07 e92 Dinan Stage 2 Join Date: Apr 2010 Location: West Covina iTrader: (12)	Thanks for all the info. I'll let you guys know what I decide. I will call both vendors tomorrow get some qoutes and see what they offer as far as satisfaction guarantee. Thanks, jorge
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03-31-2011, 10:53 AM	#15
jzepeda Lieutenant 29 Rep 587 Posts Drives: 07 e92 Dinan Stage 2 Join Date: Apr 2010 Location: West Covina iTrader: (12)	UPDATE: After weeks of google and forum searching I decided to go with Cobb Tuning. Although they are a new tuning option for BMW they will offer custom tunes for our cars as well as tuning software for the end user. I did not try the GIAC tune I'm sure it would have been a great tune. I also didn't want to get stuck with a second ECU tune that I will not be able to resell. If I decide to sell the car later, I can always revert back to the Dinan tune and sell the Cobb. Thanks for everyones response. Jorge
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