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03-23-2007 | 04:41 AM

#1966

bullie1

Tech Apprentice

Joined: Mar 2006

Posts: 50

Quote:

Originally Posted by tenderfoot57

Hey guys I have a quick tuning question for ya. I am running a sirio sti .12. The thing has crazy fast top end but I am getting beat out of the bottom. I am running the sirio pipe and the sirio #7 plug, 30% nitro, rrr with 15t and 61t 1st gear. I have tightened my cluth about as far as I dare without sacrificing performance and I am still getting beat out of the hole. The engine runs all day at 246-248 degrees F. I noticed if the engine idles for more than 10 seconds that it would not respond when I gave it full throttle. What I mean by this is that when I pull the trigger the engine continues to idle for another 3-5 seconds before it responds once it responds and clears out it continues to run just fine, it is just a step slow coming out of the corner. I don't know if it is lean or rich on the bottom or do I need to go back to the Nova to get the bottom end that I need. Thanks for the input.

TF

Hey u might be a little to rich on the bottom. You can lean the bottom and richen the top as much as u have leaned the bottom and u should be good

03-23-2007 | 01:40 PM

#1967

Sirio2127

Tech Regular

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Joined: Jun 2005

Posts: 379

From: The land of two heads

Quote:

Originally Posted by RC=Realy_Costly

would u advise running this with an evo3 sti?
is there a difference in preformance?

You will get the same paformance its simply the conector. I use to mod them by putting around joiner 9 springs because if you get a hit in the right spot it can leak. but paformance no difrence. Regards Jeremy.

03-23-2007 | 03:08 PM

#1968

RC=Realy_Costly

Tech Adept

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Posts: 180

From: ADELAIDE

thanks for all your advice mate.

cheers remo.

03-28-2007 | 05:30 AM

#1969

EVIL-ET

Tech Adept

Joined: Oct 2002

Posts: 103

From: kallangur, qld

is the skyline vr12-plus pipe any good with the sirio .12 evo 3 sti

thanx

03-28-2007 | 10:06 AM

#1970

michael 1

Tech Regular

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Posts: 401

From: san jose, ca.

try runing a # 5 or 6 plug small blks do better with a hotter plug

03-28-2007 | 02:25 PM

#1971

Racing4Evo

Tech Elite

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Joined: Sep 2002

Posts: 2,118

From: SoCal

Quote:

Originally Posted by EVIL-ET

is the skyline vr12-plus pipe any good with the sirio .12 evo 3 sti

thanx

It works great and in some ways better than the Sirio 2611 pipe. You gain a lot more fuel mileage but you lose a little bit of that top end power.

A lot of racers prefer it over the Sirio 2611.

04-01-2007 | 09:30 PM

#1972

wiggindude

Tech Initiate

Joined: Nov 2006

Posts: 20

From: Yardley PA

troubles

I have an issue with my sti..

I cant keep the motor in tune.. I think the plug was going out.. when I changed it... the motor ran hot. not over 250. but the motor really is acting up. I took the motor out..

Anyone have tips for tuning.

I cant keep the thing running at a decent idle... I have to run it fast to keep it alive.

I am going to break in my new motor.. I just dont want the same issuses

Thanks

If I need to replace anything. what do you think it would be.? It seems to have good compression... its still fast but the motor seems to be slow if the temp is not at aleast 220.

04-01-2007 | 10:35 PM

#1973

nikoskar

Tech Regular

Joined: Nov 2005

Posts: 498

From: Greece

Guys what type of motor you prefer.
Sirio STI-T3 or
Sirio STI-T5 ?

04-02-2007 | 02:06 AM

#1974

twiggy

Tech Addict

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Posts: 710

From: sydney, australia

Quote:

Originally Posted by wiggindude

if the engine starts revving high at idle then back off idle until it starts to drop revs. if idle gets too low then richen up botom end too. and bring idle back up.

04-02-2007 | 02:09 AM

#1975

twiggy

Tech Addict

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Posts: 710

From: sydney, australia

Quote:

Originally Posted by nikoskar

Guys what type of motor you prefer.
Sirio STI-T3 or
Sirio STI-T5 ?

i don't really think the t5 is that much faster than the t3. if anything, what you gain in speed you will lose in fuel mileage. i don't think the 5port is allowed to run at sanctioned events.

04-02-2007 | 02:36 AM

#1976

nikoskar

Tech Regular

Joined: Nov 2005

Posts: 498

From: Greece

Quote:

Originally Posted by twiggy

i don't really think the t5 is that much faster than the t3. if anything, what you gain in speed you will lose in fuel mileage. i don't think the 5port is allowed to run at sanctioned events.

Thanks a lot Twiggy.In our country the 5Port is allowed at local races.I see the T3 running at the track and was really fast.But the 5port was just arrived from our local distributor.What exhaust do you prefer for tight tracks?Is there Conical pipe for .12 as there is for .21 Sirio engines?