Xcelleration stage kits for STI

kingmarc63 · 01-25-2004, 08:13 AM

Hey guys,
every one talks about the Vishnu stage 1, Prodrive stage kit for their sti, but have any one heard about or tried these stage kit from xcelleration for the STIs:
http://www.xcceleration.com/27.htm
Let me know if this is a reccommended company to deal with.
ps. will that 430hp stage kit cause boost creep??

stiperformance · 01-25-2004, 08:47 AM

They are way too expensive. You can get a way cheaper kit from various tuners/vendors from this board. I think their HP rating is kinda bogus too.

And to answer your question on boost creep on the 430 kit, yes. Since they are not offering wastegate porting, I can almost guarantee boost creep.

filbert · 01-25-2004, 12:22 PM

yeah, no wastegate porting... which means most of that power they are claiming is coming from boost creep... potentially dangerous for the engine.

RadarOnPaws · 01-25-2004, 01:06 PM

Their torque curve looks really bizarre to me on the stage 2 kit.

RadarOnPaws · 01-25-2004, 01:08 PM

Quote:

Originally Posted by stiperformance

Since they are not offering wastegate porting, I can almost guarantee boost creep.

That's the thing I don't understand about the vishnu stage 1 though. They claim they are not seeing any boost creep and act like it's an unheard of phenomenon. Any thoughts on why that would be (surely they aren't that far out of touch, are they)?

stiperformance · 01-25-2004, 01:29 PM

Quote:

Originally Posted by RadarOnPaws

Quote:

Originally Posted by stiperformance

Since they are not offering wastegate porting, I can almost guarantee boost creep.

That's the thing I don't understand about the vishnu stage 1 though. They claim they are not seeing any boost creep and act like it's an unheard of phenomenon. Any thoughts on why that would be (surely they aren't that far out of touch, are they)?

Maybe they aren't doing 5th gear pulls on the dyno where boost creep is most frequent.

saltypalm · 01-25-2004, 04:58 PM

what in the world is boost creep?

RadarOnPaws · 01-25-2004, 07:44 PM

It's been pretty well hashed out here in powertrain and modification forums, but basically when the exhaust is more free-flowing than stock, the stock turbo's wastegate is too restrictive so that boost is not controlled and builds to levels where fuel cut occurs.

Agent Chobos · 01-27-2004, 11:35 PM

I think those are the guys that falsified their dyno charts. Not only was the chart not that kit, it wasn't even an STi.

See this thread:

http://www.imprezawrxsti.com/postnuk...ewtopic&t=4649

01-25-2004, 08:13 AM	#1
kingmarc63 Junior STI Driver Posts: 63 IWSTI Addict since: Jan 2004 Trader Rating: (0)	Hey guys, every one talks about the Vishnu stage 1, Prodrive stage kit for their sti, but have any one heard about or tried these stage kit from xcelleration for the STIs: http://www.xcceleration.com/27.htm Let me know if this is a reccommended company to deal with. ps. will that 430hp stage kit cause boost creep?? This ad is not endorsed by this member. Please register or login to hide this ad.

01-27-2004, 11:35 PM	#9
Agent Chobos Grassroots STI Racer Location: Los Angeles, CA Posts: 542 IWSTI Addict since: Apr 2002 Trader Rating: (0)	I think those are the guys that falsified their dyno charts. Not only was the chart not that kit, it wasn't even an STi. See this thread: http://www.imprezawrxsti.com/postnuk...ewtopic&t=4649 This ad is not endorsed by this member. Please register or login to hide this ad.

New To Site?	Need Help?	More
REGISTER FOR FREE! IWSTI Rules/Signature Rules Create a Member Journal Bookmark IWSTI Tell your friends about IWSTI	Frequently Asked Questions Did you forget your password? Make a suggestion or report a bug Mark Forums Read Contact Us	Member Journals Forum Pictures & Photography Forum GR Series (08+) Marketplace GD Series (03/04-07) Marketplace Hot eBay Deals Forum Beyond Off Topic

01-25-2004, 08:47 AM	#2
stiperformance Professional STI Racer Location: PA Posts: 762 IWSTI Addict since: Jan 2003 Trader Rating: (1)	They are way too expensive. You can get a way cheaper kit from various tuners/vendors from this board. I think their HP rating is kinda bogus too. And to answer your question on boost creep on the 430 kit, yes. Since they are not offering wastegate porting, I can almost guarantee boost creep.

01-25-2004, 12:22 PM	#3
filbert Professional STI Racer Car: RIP 98 Accord. Yay Location: Schaumburg Posts: 655 IWSTI Addict since: Nov 2003 Trader Rating: (0)	yeah, no wastegate porting... which means most of that power they are claiming is coming from boost creep... potentially dangerous for the engine.

01-25-2004, 01:06 PM	#4
RadarOnPaws S204 Racer Posts: 2,513 IWSTI Addict since: Oct 2003 Trader Rating: (0)	Their torque curve looks really bizarre to me on the stage 2 kit.

01-25-2004, 04:58 PM	#7
saltypalm Junior STI Driver Posts: 86 IWSTI Addict since: Jan 2004 Trader Rating: (0)	what in the world is boost creep?

01-25-2004, 07:44 PM	#8
RadarOnPaws S204 Racer Posts: 2,513 IWSTI Addict since: Oct 2003 Trader Rating: (0)	It's been pretty well hashed out here in powertrain and modification forums, but basically when the exhaust is more free-flowing than stock, the stock turbo's wastegate is too restrictive so that boost is not controlled and builds to levels where fuel cut occurs.