06-04-2018, 07:09 AM
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#16
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Quote:
Originally Posted by jerrydub10
Forgive my ignorance, but what products do AEM carry that could control the 7th injector and timing?
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I had the URD 7th in the past and found the part throttle tuning to be garbage under any boost. AFR’s were off, some hesitations, etc. No boost or WOT tuned fine, but that’s not daily driving conditions.
I upgraded all the injectors to ~300 Lexus injectors (whichever the baby blue ones are, I think sc300??), and put the AEM FIC6 in. Far far happier with the results, and I broke even after selling my URD kit.
URD was an ok kit, for back in the day, but they are milking what seems like early 90’s technology at best. I mean it’s still programmed with an old old db25 serial cable!
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2000 4Runner Sport - TRD&AEM SuperCharged
Solo Long Travel & KING 2.5 & bumps, 4th gen rear axle & KING 2.5 12's
F+R ARB's, 4.88 Yukon's, 295 KM3s
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06-04-2018, 12:17 PM
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#17
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Join Date: Oct 2014
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Quote:
Originally Posted by jerrydub10
Forgive my ignorance, but what products do AEM carry that could control the 7th injector and timing?
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It can drive the 7th injector but the AEM FI/C 6 is mostly used to drive 6 injectors. There's also programming for an on/off switch for a secondary injector such as a single nozzle for water/meth if it's small enough (hard a tune a large nozzle going from 0% to 100% instantly).
There's lots of piggybacks out there, and everyone likes the one they have. I have the AEM FI/C 6 installed as well and it's good but Toyotas are just hard to tune with a piggyback. O2 sensor skewing is a MUST though.
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06-04-2018, 05:46 PM
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#18
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Quote:
Originally Posted by gamefreakgc
It can drive the 7th injector but the AEM FI/C 6 is mostly used to drive 6 injectors. There's also programming for an on/off switch for a secondary injector such as a single nozzle for water/meth if it's small enough (hard a tune a large nozzle going from 0% to 100% instantly).
There's lots of piggybacks out there, and everyone likes the one they have. I have the AEM FI/C 6 installed as well and it's good but Toyotas are just hard to tune with a piggyback. O2 sensor skewing is a MUST though.
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what do you mean by O2 sensor skewing? like a wideband emulator?
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06-04-2018, 05:58 PM
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#19
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The FIC modifies the O2 sensor signal so that the factory ECU will “see” 14.7 when the true AFR’s are different. It keeps the factory ECU happy.
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2000 4Runner Sport - TRD&AEM SuperCharged
Solo Long Travel & KING 2.5 & bumps, 4th gen rear axle & KING 2.5 12's
F+R ARB's, 4.88 Yukon's, 295 KM3s
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06-04-2018, 06:01 PM
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#20
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BTW - it won’t drive just a 7th injector independently. It will, however, drive 6 supplemental injectors that are timed with the factory injectors.
Meaning, it won’t work because only a 7th injector would pulse only with one of the existing injectors - timing would be all wrong.
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2000 4Runner Sport - TRD&AEM SuperCharged
Solo Long Travel & KING 2.5 & bumps, 4th gen rear axle & KING 2.5 12's
F+R ARB's, 4.88 Yukon's, 295 KM3s
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06-04-2018, 09:44 PM
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#21
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Ahhhh so the FIC/6 automatically adjusts the reading for the stock ecu under tune? that is handy. I maybe just have to try that route. any idea where I can find those baby blue injectors?
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06-05-2018, 12:06 PM
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#22
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Quote:
Originally Posted by jerrydub10
what do you mean by O2 sensor skewing? like a wideband emulator?
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It adds or removes voltage to the ECU so the computer thinks it's running lean, so it richens up the mix. I have AFR's in the high 12's even before I hit open loop (WOT). Around town it gives a noticable increase in power since the O2 sensor and ECU will de-tune any fuel you add after a few trips. Without O2 sensor skewing or a full standalone aftermarket ECU you will never get it to hold a tune at anything other than WOT.
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06-05-2018, 12:11 PM
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#23
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Quote:
Originally Posted by gamefreakgc
It adds or removes voltage to the ECU so the computer thinks it's running lean, so it richens up the mix. I have AFR's in the high 12's even before I hit open loop (WOT). Around town it gives a noticable increase in power since the O2 sensor and ECU will de-tune any fuel you add after a few trips. Without O2 sensor skewing or a full standalone aftermarket ECU you will never get it to hold a tune at anything other than WOT.
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Close, but not quite. The factory ECU shouldn’t “see” a change at all in the O2, which is why ideal factory ECU fuel trims should be 0.
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2000 4Runner Sport - TRD&AEM SuperCharged
Solo Long Travel & KING 2.5 & bumps, 4th gen rear axle & KING 2.5 12's
F+R ARB's, 4.88 Yukon's, 295 KM3s
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06-05-2018, 07:59 PM
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#24
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ahhh, that makes sense. Thank you guys for the info! happen to know anyone looking for a 7th injector?
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06-07-2018, 10:37 PM
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#25
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Hey guys so I got the block and heads back from the machine shop today. Heads look brand new. I'm putting some rust remover on the block to sit over night so that I can paint it on Saturday.
I have a question though. Does anyone know the ring order for the compression rings? I got new pistons and rings in the kit and the compression ones are labeled first and second but no instructions. So I dont k ow if 1st is on top or bottom. Maybe I'm overthinking it but I really dont wanna mess this up.
I'm going to contact LCE tomorrow to see if they know since its their kit.
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06-07-2018, 10:55 PM
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#26
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Quote:
Originally Posted by jerrydub10
Hey guys so I got the block and heads back from the machine shop today. Heads look brand new. I'm putting some rust remover on the block to sit over night so that I can paint it on Saturday.
I have a question though. Does anyone know the ring order for the compression rings? I got new pistons and rings in the kit and the compression ones are labeled first and second but no instructions. So I dont k ow if 1st is on top or bottom. Maybe I'm overthinking it but I really dont wanna mess this up.
I'm going to contact LCE tomorrow to see if they know since its their kit.
Sent from my LG-H932 using Tapatalk
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I've never seen anyone rebuild a 5VZ on here before so call LCE. Dont forget to set the ring gap & have them in the right order, usually it goes from the top down. Sorry I have no specs for anything.
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
Last edited by Scramble; 06-11-2018 at 12:58 AM.
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06-08-2018, 10:39 AM
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#27
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Quote:
Originally Posted by Scramble
I've never seen anyone rebuild a 5VZ on here before so call LCE. Dont forget to set the rig gap & have them in the right order, usually it goes from the top down. Sorry I have no specs for anything.
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Yeah seems like most people on here will just replace a 5VZ before rebuilding it. I ended up picking up this engine for $100 from a guy out here, it had a bottom end knock, so i figured i might as well spend the same amount to rebuild it as it would cost me to get one with 70k miles on it.
As of right now I'm waiting for an LCE tech to get on chat so I can ask them about it, cause the rings were supposed to come pre gapped, and I think I found the order they go in I just want to verify.
I am stuck on my ship today so I have to wait to paint until tomorrow but I sure am getting giddy, I feel like a fat kid in a candy store with all these new parts.
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06-08-2018, 10:58 AM
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#28
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Quote:
Originally Posted by Scramble
Dont forget to set the rig gap
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What's the saying about ring gap on a boosted engine?
If they're too loose, only you will know it.
If they're too tight, everyone will know it.
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'99 Highlander 5-spd manual e-locker no-running-board
SS 3" suspension lift/1" body lift/33" tires/'Snowflake' TRD Taco wheels/231mm Tundra brakes/bumpers/armor/sliders/winch/Sherpa Matterhorn rack
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06-08-2018, 11:34 AM
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#29
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Quote:
Originally Posted by JohnMc
What's the saying about ring gap on a boosted engine?
If they're too loose, only you will know it.
If they're too tight, everyone will know it.
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isn't that the truth!
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06-08-2018, 11:43 AM
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#30
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Quote:
Originally Posted by jerrydub10
Yeah seems like most people on here will just replace a 5VZ before rebuilding it. I ended up picking up this engine for $100 from a guy out here, it had a bottom end knock, so i figured i might as well spend the same amount to rebuild it as it would cost me to get one with 70k miles on it.
As of right now I'm waiting for an LCE tech to get on chat so I can ask them about it, cause the rings were supposed to come pre gapped, and I think I found the order they go in I just want to verify.
I am stuck on my ship today so I have to wait to paint until tomorrow but I sure am getting giddy, I feel like a fat kid in a candy store with all these new parts.
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Maybe they are but you still need to check them & all tolorences. I'd hate to see you go through all of this work & then blow it up.
Someday I plan on buying a LCE Stage 3 3RZ or build it myself if I cant afford the long block. It'll be around $7000. If I did it myself I'd have to buy all of the tools to do it right. Yea! fat kid! LOL
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
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