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#1 |
Join Date: Dec 2012
Location: Tampa, FL
Posts: 118
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What does the difference between 225 and 375 hp feel like? My 91' seems really quick in valet mode, but i do not think that with the secondaries on I am getting the additional 150 hp, although it is faster (acceleration test). With secondaries on, I can spin the tires at about 5k rpm in 1st gear.
Thanks everyone. Maybe I should invest in a fuel pressure tester... |
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#2 |
![]() ![]() Join Date: Jun 2005
Location: pittsburgh
Posts: 4,633
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I don't know if i've ever really driven the car in normal mode. judging by the way it feels when the secondaries don't open, I'm going to say it's a vast difference
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It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" |
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#3 |
![]() Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,367
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If it falls flat after 5k rpm, the secondaries are not opening. With the secondaries, the tach should fly to 7 grand
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#4 |
![]() Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,169
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Lots of guides here on how to check it out. I can tell just by the sound not to mention the much better pull when the key is on. As others said after 5k it goes flat with the key off.
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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#5 | |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,792
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With Key On........ Find the Pink Wire which is C17 (or pink wire with black strip) on the ECM. Insert a Paperclip along side the Pink wire and attach a ground wire with Alligator Clip on both ends. Pin C17 is located in the Green Connector second connector on the ECM from the passenger side. ![]() Look down on the Passenger Side in the ...........................Look down on the Drivers Side in the direction of the screw driver (Use a Flashlight). ..............direction of the screw driver (Use a Flashlight). You will see the shaft of the canister which will ...............You will see the shaft of the canister which will move toward the FRONT of the engine when ...................move toward the REAR of the engine when you ground the Alligator Clip (The Front of the ................you ground the Alligator Clip (The Rear of the engine is to the Right in the Photo)..................................(engine is to the Right in the Photo). ![]() ![]()
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Left Clickable links ![]() -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 02-27-2015 at 01:44 PM. |
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#6 |
![]() Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,367
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Hey Dynomite, nice throttle cable clip
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#7 |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,792
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Carter Bling....then I rethread the bracket hole and use the SS Allen Head bolts that fit the TB Coolant Cover Throttle Body Coolant Cover SS Bolts
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#8 |
![]() Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,367
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Can't beat the Carter bling.
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#9 | |
![]() Join Date: Feb 2014
Location: AZ
Posts: 860
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Well, maybe checking whether the FULL ENGINE POWER light is illuminated is a little easier, but not much. |
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#10 | |
Join Date: Dec 2012
Location: Tampa, FL
Posts: 118
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