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Enthusiast ![]() Joined Mar 13, '10 From New Iberia Currently Offline Reputation: 0 (0%) ![]() |
Hey guys, I just changed out my head gasket not too long ago. After everything was put back together I drove it around a bit and the ride was good as I expected. But a few days after I tried to just floor it to see what it would sound like(just got my exhaust done 2.5" catback and custom intake). Yeah it sounded really nice but I noticed the more the RPM rose the more power was loss, but the engine got louder at 4500RPM and it reminded me of the VTEC that Honda has. I know its a 5SFE and they are like boat anchors, but it sounds to me that my timing may be off. Heres a video of what I was trying to describe, sorry for the poor quality it was hard to try to record, steer, and shift at the same time
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) ![]() |
as stated, SMALL CHANGES in the fuel map. not huge. just small "trims" that particular motor runs better on.
Copied from the BGB " Vehicles equipped with engine or transmission computers require a relearn procedure after vehicle battery is disconnected. Many vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance. When vehicle battery is disconnected, this memory is lost. The computer will use default data until new data from each key start is stored. As computer memorizes vehicle operation for each new key start...the following complaints (driveability problems) may exist: * Harsh Or Poor Shift Quality * Rough Or Unstable Idle * Hesitation Or Stumble * Rich Or Lean Running * Poor Fuel Mileage Automatic Transmission * Set parking brake, start engine in "P" or "N" position. Warm-up vehicle to normal operating temperature or until cooling fan cycles. * Allow vehicle to idle for one minute in "N" position. Select "D" and allow engine to idle for one minute. * Accelerate at normal throttle position (20-50%) until vehicle shifts into top gear. * Cruise at light to medium throttle. * Decelerate to a stop, allowing vehicle to downshift, and use brakes normally. * Process may be repeated as necessary. Manual Transmission * Place transmission in Neutral position. * Ensure emergency brake has been set and all accessories are turned off. * Start engine and bring to normal operating temperature. * Allow vehicle to idle in Neutral for one minute. * Initial relearn is complete: process will be completed during normal driving. " EFI fuse powers: Circuit opening relay ECU Fuel sender and pump Idle air control valve Various VSVs This stuff is straight from the toyota manuals. -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Lo-Fi Version | Time is now: February 22nd, 2025 - 3:07 PM |