391.3 whp 385.8 wlb-ft SR55 "success" 20.5 psi peak 19.5 psi taper 93 octane

**Siegel Racing** · 09-29-2005, 03:22 PM

Despite being my least favorite turbo, I was impressed with this SR55 setup. No guarantees against rich stutter with the DR725 FMIC when I take it off the dyno in the morning, but it hadn't been too bad so far.

whp wtq

Here's boost:

wtq bst

we did spray the FMIC and charge pipes with room temp water before the run. AFR's were "perfect" 10.6:1 from peak tq to 5400, then smoothly up to 11.2.

SS

quickone · 09-29-2005, 07:37 PM

Looks great Scott. I knew you had more in that thing. Is this thing welded or stock?

05impreza · 09-29-2005, 07:59 PM

sweet, sounds like it turned out good....

jason

Flycaster · 09-29-2005, 09:04 PM

Scott, if you don't mind my asking, why do you say, "Despite being my least favorite turbo...?"

**evilSTi7** · 09-30-2005, 07:46 AM

wow, the spool up on that looks great.

focus4 · 09-30-2005, 08:07 AM

Quote:

Originally Posted by evilSTi7

wow, the spool up on that looks great.

I think its a little late hitting... other comparable turbo's spool a bit faster, SZ55 and GT30R come to mind...

keyser_soze · 09-30-2005, 12:49 PM

nice results. thanks for sharing.

What kind of gas?
Is this the new SR55 with the 27mm wastegate?

**Siegel Racing** · 09-30-2005, 01:22 PM

Yep, it's a little laggy. The SR55's seem to be overpriced and normally require more boost to make the same power. I was HIGHLY impressed with this one. We had a number of mid 380 whp and high 360 to 370 wlb-ft pulls, which is pretty typical for near 20 psi on these. I let the engine bay cool and made that 391 and 386... it was on normal old 93 octane.

It is an older SR55, IWG...

SS

Flycaster · 09-30-2005, 01:40 PM

OK, lag and price, gotcha. Just curious.

particleeffect · 09-30-2005, 02:25 PM

i like how it hits peak torque and then just instantly falls off.

edit- not saying, or even inferring that it's a software issue.

WhiteKnight · 10-01-2005, 03:54 PM

When does it hit 1 bar ?

mike05sti · 10-03-2005, 10:02 AM

Quote:

Originally Posted by Subaru of Gwinnett

Despite being my least favorite turbo, I was impressed with this SR55 setup. No guarantees against rich stutter with the DR725 FMIC when I take it off the morning, but it hadn't been too bad so far.

whp wtq

Here's boost:

wtq bst

we did spray the FMIC and charge pipes with room temp water before the run. AFR's were "perfect" 10.6:1 from peak tq to 5400, then smoothly up to 11.2.

SS

I've been trying to tell everybody this is the best bolt on turbo you can buy, and this comes from Gadiel from Big Valley, if properly tuned. I can not wait to bolt mine on.

**evilSTi7** · 10-03-2005, 01:31 PM

laggy hmmm. 150whp by 300 is similar to a stock sti i think. but correct me if i'm wrong.

cleatis · 10-03-2005, 07:09 PM

scott,

Which exhaust system did the car have, mainly the down pipe?

thanks

Nick

**Siegel Racing** · 10-07-2005, 05:10 AM

It's all APS....

SS

09-30-2005, 02:25 PM	#10
particleeffect Junior STI Driver Posts: 169 Join Date: Nov 2004 Trader Rating: (0)	i like how it hits peak torque and then just instantly falls off. edit- not saying, or even inferring that it's a software issue. Last edited by particleeffect : 09-30-2005 at 02:38 PM.

10-07-2005, 05:10 AM	#15
Siegel Racing Authorized Vendor Car: Your STi ;) Fav Mod: Everything Location: Atlanta Posts: 1,262 Join Date: Mar 2005 Trader Rating: (2)	It's all APS.... SS This ad is not endorsed by this member. Please register or login to hide this ad.

09-29-2005, 07:37 PM	#2
quickone Junior STI Driver Posts: 103 Join Date: Mar 2005 Trader Rating: (0)	Looks great Scott. I knew you had more in that thing. Is this thing welded or stock?

09-29-2005, 07:59 PM	#3
05impreza Spec C Club Car: 06 Ford F150 Lariat Fav Mod: 4X4 Location: Nashville, TN Posts: 1,029 Join Date: Aug 2005 Trader Rating: (4)	sweet, sounds like it turned out good.... jason

09-29-2005, 09:04 PM	#4
Flycaster S204 Racer Posts: 3,008 Join Date: Apr 2004 Trader Rating: (0)	Scott, if you don't mind my asking, why do you say, "Despite being my least favorite turbo...?"

09-30-2005, 07:46 AM	#5
evilSTi7 The Hoff Fan Club, member #001 Car: 05 WRB/Gold Fav Mod: Hood Scoop Homer Location: Where ever The Hoff is! Posts: 10,323 Join Date: Jul 2004 Trader Rating: (4)	wow, the spool up on that looks great.

09-30-2005, 12:49 PM	#7
keyser_soze Professional STI Racer Car: WRB, 2005 STi Posts: 673 Join Date: May 2004 Trader Rating: (0)	nice results. thanks for sharing. What kind of gas? Is this the new SR55 with the 27mm wastegate?

09-30-2005, 01:22 PM	#8
Siegel Racing Authorized Vendor Car: Your STi ;) Fav Mod: Everything Location: Atlanta Posts: 1,262 Join Date: Mar 2005 Trader Rating: (2)	Yep, it's a little laggy. The SR55's seem to be overpriced and normally require more boost to make the same power. I was HIGHLY impressed with this one. We had a number of mid 380 whp and high 360 to 370 wlb-ft pulls, which is pretty typical for near 20 psi on these. I let the engine bay cool and made that 391 and 386... it was on normal old 93 octane. It is an older SR55, IWG... SS

09-30-2005, 01:40 PM	#9
Flycaster S204 Racer Posts: 3,008 Join Date: Apr 2004 Trader Rating: (0)	OK, lag and price, gotcha. Just curious.

10-01-2005, 03:54 PM	#11
WhiteKnight Amateur STI Driver Car: 04 UK Spec STI Fav Mod: F-CON V Pro Posts: 34 Join Date: Nov 2003 Trader Rating: (0)	When does it hit 1 bar ?

10-03-2005, 01:31 PM	#13
evilSTi7 The Hoff Fan Club, member #001 Car: 05 WRB/Gold Fav Mod: Hood Scoop Homer Location: Where ever The Hoff is! Posts: 10,323 Join Date: Jul 2004 Trader Rating: (4)	laggy hmmm. 150whp by 300 is similar to a stock sti i think. but correct me if i'm wrong.

10-03-2005, 07:09 PM	#14
cleatis Senior STI Driver Car: 07 SWP/ Gold Fav Mod: The next one Location: Castle Rock, CO Posts: 329 Join Date: Aug 2004 Trader Rating: (12)	scott, Which exhaust system did the car have, mainly the down pipe? thanks Nick