stock turbo STi hits 12.2 @ 112.5 trap speed(new record)
12-09-2006, 03:32 PM
#63
Originally Posted by Cobb05STI
this is true a perrin EBCS would have done better.
i wonder if the housing is cracked on the turbo yet?
well congrats anyhow
i wonder if the housing is cracked on the turbo yet?
well congrats anyhow
. The boost recovery after a shift is also greatly improved with the MBC.Thanks
12-10-2006, 08:40 PM
#66
Registered User
Join Date: Dec 2006
Location: NY
Posts: 11
Car Info: Cobb Stage 2 Walbro255lph, eibach prokit, RCE camber plates, invidia TBE RACE, Black red lip BBSs
Originally Posted by MethodBuilt
Why do you think a perrin EBCS would have done better? This car is running a Hallman MBC which will actually beat out any solenoid controlled system in terms of boost response and stability. FYI, the car used to run a GM 3 port solenoid (similar to the perrin unit). Using that solenoid with the factory ECU, we were limited to just around 23psi due to maxxing out the stock MAP sensor. In that state of tune, Sean hit 12.4 @ 110 at infineon on a warmer day. With the MBC, we're boosting a peak of 25psi tapering off to ~14psi by redline. The car picked up almost 30ft-lbs with the additional 2psi in the mid range . The boost recovery after a shift is also greatly improved with the MBC.
Thanks
. The boost recovery after a shift is also greatly improved with the MBC.Thanks
12-10-2006, 08:44 PM
#67
Registered User
Join Date: Dec 2006
Location: NY
Posts: 11
Car Info: Cobb Stage 2 Walbro255lph, eibach prokit, RCE camber plates, invidia TBE RACE, Black red lip BBSs
Originally Posted by MethodBuilt
Why do you think a perrin EBCS would have done better? This car is running a Hallman MBC which will actually beat out any solenoid controlled system in terms of boost response and stability. FYI, the car used to run a GM 3 port solenoid (similar to the perrin unit). Using that solenoid with the factory ECU, we were limited to just around 23psi due to maxxing out the stock MAP sensor. In that state of tune, Sean hit 12.4 @ 110 at infineon on a warmer day. With the MBC, we're boosting a peak of 25psi tapering off to ~14psi by redline. The car picked up almost 30ft-lbs with the additional 2psi in the mid range . The boost recovery after a shift is also greatly improved with the MBC.
Thanks
. The boost recovery after a shift is also greatly improved with the MBC.Thanks
have u seen that new EBC thats out its called a World Electronic Performance i do bileave idk ill double check on that. but it controls waste gate duty cycle and everything it's supposed to be really good. i wonder if the one will help a high 11 run? oh i think its a TC-1 or somthing idk ill look for it again
Last edited by Cobb05STI; 12-10-2006 at 08:45 PM. Reason: idk
12-10-2006, 10:06 PM
#68
Originally Posted by Cobb05STI
true i retract my preveous statement. well 25 psi is a lot for that poor lil turbo did u try tapering the boost to 15.3 15.5 thats what most guys do. what BOV u running i bileave stock can only hold good till 19.3psi correct me if im wrong. 100 octane is another thing i thought u where on pump gas lol.. i wanna shot for the stars here in NY like your doing and compair times. also did u have a FMIC? do u think u'd gain anything with one if not? i'd be running in New Jersey though the air quality sucks there danm ppl with the polution and power plants lol making are air thicker.
. The car is running the stock BPV. It seems to be holding boost just fine, but we might try an aftermarket valve to see if it does any better. No FMIC... still just the stock TMIC. I could see a FMIC helping for 1/4 mile mainly to fight heat soak while staging. Sean is using a bag of ice for that in the meantime .The car is deffinately on 100 octane for these times... no way of doing this on our lovely cali 91. Sean managed a 12.6 @ 107mph on his single run on the 91 map.
As far as 25psi being a lot for the turbo, it all depends on the RPM that its being run at. The fact that the car picked up almost 30ft-lbs by going from 23psi to 25psi, tells me that the turbo is still plenty efficient at 25psi in the low-mid range.
Thanks
Last edited by MethodBuilt; 12-10-2006 at 10:28 PM.
12-10-2006, 10:09 PM
#69
Originally Posted by Cobb05STI
have u seen that new EBC thats out its called a World Electronic Performance i do bileave idk ill double check on that. but it controls waste gate duty cycle and everything it's supposed to be really good. i wonder if the one will help a high 11 run? oh i think its a TC-1 or somthing idk ill look for it again
Thanks
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