Disco Potato?

***BoostJunkie*** · 04-18-2006, 03:31 PM

For those of you who don't know, the GT28RS (aka Disco Potato) is a very popular turbo in the 240SX world. It's very commonly used on SR20's, and it is now also being used extensively on Audis and VW's. My question is, why not use it on the STi? It's a bit smaller than a GT30R, so it will make less power but have better spool. In theory, it could make similar power to an FP Green (maybe a bit more) but possibly spool better due to its ball bearing design. Any thoughts?

RainMaker · 04-18-2006, 04:40 PM

http://www.atpturbo.com/root/releases/release063005.htm

ATP *was* designing a Discopotato setup... but I dont know where that ended up...

chris

whitson01 · 04-18-2006, 04:46 PM

ive been emailing atp for a LONG time about turbo setups that they are "developing" for the sti.. well, its been in the works for a LONG time and still pretty much nothing.. so i gave up on them..

munky69 · 04-18-2006, 05:50 PM

i just checked up on the atp set up the other day. **** them, they obviously don't care about realeasing it. i was excited about it, but i wouldn't get one now if it ever comes out. gt28rs is on my list, maybe i'll go with it...but you should first

whitson01 · 04-18-2006, 06:52 PM

ive deal emailing them off and on for a year and NOTHING!! they are just yanking us around.. oh well.. maybe they will make stuff for the evo

Flycaster · 04-18-2006, 07:17 PM

^^Trust me, you're not the first person to come this conclusion. Their stuff has been ready for "imminent release" for years.

***BoostJunkie*** · 04-18-2006, 07:34 PM

That's strange, they are very prompt with their Audi/VW kits and they are widely used. The only complaints I have heard about them is poor software but that problem doesn't really apply to us, as we use custom tuning.

Flycaster · 04-18-2006, 09:18 PM

My take is they are late to the party, and they figure most of the girls already have dates by now. At this point their incentive has to be a little low. But, that's just a hunch.

***BoostJunkie*** · 04-18-2006, 09:26 PM

True, although nobody has released a GT28RS kit yet. I suppose you could use the Perrin rotated mount kit with this turbo, that could be a sweet setup.

Mykl · 04-19-2006, 05:58 AM

I was going to buy a 180SX so I did some hanging around the 240SX forums. The general concencus is that the GT28RS isn't as good as some of it's competitors. Most people recommend the GT28R or GT2871R over the GT28RS. The GT28R is capable of similar performance and costs less, and the GT2871R is capable of making more power for close to the same amount of money.

The GT28RS isn't worth much more than 300 whp on an SR20DET, I think it's just too small to be worth considering for our cars.

The transient boost response of the Disco Potato is amazing though, but that's something you'll notice with any ball bearing turbo.

srascal · 04-19-2006, 07:18 AM

I dont think it would make any more power then a 20g, it might spool better, but definitly wouldnt have as much top end. Not to mention it would probably cost alot more becuase its not a bolt on.

What kind of cfm's do they flow? I know they are very popular coming from a vw, and people were making about 300whp on 1.8t's with them. I think it may just be too similar to a vf39 and not have much top end.

SoaReS · 04-19-2006, 07:31 AM

I was going to post the disco banana but its gone

BIC · 04-19-2006, 12:15 PM

Quote:

Originally Posted by BoostJunkie

That's strange, they are very prompt with their Audi/VW kits and they are widely used. The only complaints I have heard about them is poor software but that problem doesn't really apply to us, as we use custom tuning.

that's not entirely true. They were developing a bolt up gt28r & rs kit for the vw and audi, and had it advertised as "coming soon - in 2 weeks" for about a year. Although some say it was an inside joke, they still took quite some time before it was released a couple months ago.
I wouldn't count on, or wait till they have a 'kit' for wrx/sti.

***BoostJunkie*** · 04-19-2006, 12:20 PM

Interesting, I didn't know that. Guess I have been out of the whole Audi scene for too long. I'm not really one to buy a kit anyways, I'd rather piece together my own components. I was just curious why the smaller Garrett turbos aren't ever used on Subies.

**Gruppe-S** · 04-19-2006, 06:04 PM

Oh man, this was the ultimate frustration. We were working with ATP for awhile on a bolt-on GT3071 for the STi but that project never came to fruition. The pricing would have been less than a Green, it would have made more power, and would have spooled better. Preliminary testing was going great but for whatever reason that project was nixxed. I can't tell you how excited we were about that turbo but oh well...

Anyways, the GT28RS is actually a very small turbo and we thought about testing that on the 2.0L WRX. We ended up testing the GT28R and it didn't make any more power than a VF34 on a 2.0L, plus it was more expensive because you needed to adapt it for bolt on use. The GT28RS is actually smaller than the GT28R so I think that would be way too small for the 2.5L block. However, the GT2871 was one we were curious about on the 2.0L motor and we never ended up testing that. That might be like a better TD06-18G for the STi.

Thanks,

Geoff

04-18-2006, 03:31 PM	#1
*BoostJunkie* Sold My Soul For Mods Car: '05 CGM STi Fav Mod: Track Time Location: Bethesda, MD Posts: 6,765 IWSTI Addict since: Jun 2004 Trader Rating: (14)	Disco Potato? For those of you who don't know, the GT28RS (aka Disco Potato) is a very popular turbo in the 240SX world. It's very commonly used on SR20's, and it is now also being used extensively on Audis and VW's. My question is, why not use it on the STi? It's a bit smaller than a GT30R, so it will make less power but have better spool. In theory, it could make similar power to an FP Green (maybe a bit more) but possibly spool better due to its ball bearing design. Any thoughts? This ad is not endorsed by this member. Please register or login to hide this ad.

04-19-2006, 06:04 PM	#15
Gruppe-S Authorized Vendor Car: 01 Subaru WRX STi Spec C Fav Mod: Coming Soon Posts: 4,153 IWSTI Addict since: Aug 2005 Trader Rating: (14)	Oh man, this was the ultimate frustration. We were working with ATP for awhile on a bolt-on GT3071 for the STi but that project never came to fruition. The pricing would have been less than a Green, it would have made more power, and would have spooled better. Preliminary testing was going great but for whatever reason that project was nixxed. I can't tell you how excited we were about that turbo but oh well... Anyways, the GT28RS is actually a very small turbo and we thought about testing that on the 2.0L WRX. We ended up testing the GT28R and it didn't make any more power than a VF34 on a 2.0L, plus it was more expensive because you needed to adapt it for bolt on use. The GT28RS is actually smaller than the GT28R so I think that would be way too small for the 2.5L block. However, the GT2871 was one we were curious about on the 2.0L motor and we never ended up testing that. That might be like a better TD06-18G for the STi. Thanks, Geoff This ad is not endorsed by this member. Please register or login to hide this ad.

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04-18-2006, 04:40 PM	#2
RainMaker The Next Petter Solberg Car: 08 Z06 Corvette Fav Mod: Jack Jack Location: Portland, OR Posts: 882 IWSTI Addict since: Oct 2005 Trader Rating: (3)	http://www.atpturbo.com/root/releases/release063005.htm ATP was designing a Discopotato setup... but I dont know where that ended up... chris

04-18-2006, 04:46 PM	#3
whitson01 Spec C Club Car: 06 acura tsx Fav Mod: soon to come Location: east TN Posts: 1,417 IWSTI Addict since: Dec 2004 Trader Rating: (3)	ive been emailing atp for a LONG time about turbo setups that they are "developing" for the sti.. well, its been in the works for a LONG time and still pretty much nothing.. so i gave up on them..

04-18-2006, 05:50 PM	#4
munky69 S204 Racer Car: 04 STi Fav Mod: recaros Location: socal Posts: 3,172 IWSTI Addict since: Aug 2003 Trader Rating: (2)	i just checked up on the atp set up the other day. **** them, they obviously don't care about realeasing it. i was excited about it, but i wouldn't get one now if it ever comes out. gt28rs is on my list, maybe i'll go with it...but you should first

04-18-2006, 06:52 PM	#5
whitson01 Spec C Club Car: 06 acura tsx Fav Mod: soon to come Location: east TN Posts: 1,417 IWSTI Addict since: Dec 2004 Trader Rating: (3)	ive deal emailing them off and on for a year and NOTHING!! they are just yanking us around.. oh well.. maybe they will make stuff for the evo

04-18-2006, 07:17 PM	#6
Flycaster S204 Racer Posts: 3,123 IWSTI Addict since: Apr 2004 Trader Rating: (0)	^^Trust me, you're not the first person to come this conclusion. Their stuff has been ready for "imminent release" for years.

04-18-2006, 07:34 PM	#7
*BoostJunkie* Sold My Soul For Mods Car: '05 CGM STi Fav Mod: Track Time Location: Bethesda, MD Posts: 6,765 IWSTI Addict since: Jun 2004 Trader Rating: (14)	That's strange, they are very prompt with their Audi/VW kits and they are widely used. The only complaints I have heard about them is poor software but that problem doesn't really apply to us, as we use custom tuning.

04-18-2006, 09:18 PM	#8
Flycaster S204 Racer Posts: 3,123 IWSTI Addict since: Apr 2004 Trader Rating: (0)	My take is they are late to the party, and they figure most of the girls already have dates by now. At this point their incentive has to be a little low. But, that's just a hunch.

04-18-2006, 09:26 PM	#9
*BoostJunkie* Sold My Soul For Mods Car: '05 CGM STi Fav Mod: Track Time Location: Bethesda, MD Posts: 6,765 IWSTI Addict since: Jun 2004 Trader Rating: (14)	True, although nobody has released a GT28RS kit yet. I suppose you could use the Perrin rotated mount kit with this turbo, that could be a sweet setup.

04-19-2006, 05:58 AM	#10
Mykl S204 Racer Car: '04.5 STi Fav Mod: Whiteline steering rack bushings Location: Montgomery, Al Posts: 3,149 IWSTI Addict since: Apr 2006 Trader Rating: (0)	I was going to buy a 180SX so I did some hanging around the 240SX forums. The general concencus is that the GT28RS isn't as good as some of it's competitors. Most people recommend the GT28R or GT2871R over the GT28RS. The GT28R is capable of similar performance and costs less, and the GT2871R is capable of making more power for close to the same amount of money. The GT28RS isn't worth much more than 300 whp on an SR20DET, I think it's just too small to be worth considering for our cars. The transient boost response of the Disco Potato is amazing though, but that's something you'll notice with any ball bearing turbo.

04-19-2006, 07:18 AM	#11
srascal Senior STI Driver Car: 05 Subaru WRX STi Fav Mod: ECUtek Location: Long Island, NY Posts: 316 IWSTI Addict since: Oct 2005 Trader Rating: (0)	I dont think it would make any more power then a 20g, it might spool better, but definitly wouldnt have as much top end. Not to mention it would probably cost alot more becuase its not a bolt on. What kind of cfm's do they flow? I know they are very popular coming from a vw, and people were making about 300whp on 1.8t's with them. I think it may just be too similar to a vf39 and not have much top end.

04-19-2006, 07:31 AM	#12
SoaReS S204 Racer Car: 05\|WRB\|STi Fav Mod: Cobb Stage 2 Location: H-Town, NJ Posts: 3,797 IWSTI Addict since: Aug 2005 Trader Rating: (3)	I was going to post the disco banana but its gone

04-19-2006, 12:20 PM	#14
*BoostJunkie* Sold My Soul For Mods Car: '05 CGM STi Fav Mod: Track Time Location: Bethesda, MD Posts: 6,765 IWSTI Addict since: Jun 2004 Trader Rating: (14)	Interesting, I didn't know that. Guess I have been out of the whole Audi scene for too long. I'm not really one to buy a kit anyways, I'd rather piece together my own components. I was just curious why the smaller Garrett turbos aren't ever used on Subies.