Unhook your negative terminal on your battery for 15 min. Then reinstall the terminal.
Then go for a drive, driving the same way as before the computer re-set. Then come back here and post your results.
While I agree that these computers are better, they still do not adapt to individual driving style instantly. It is my expirence that it takes about 50 miles for the computer in my truck to re-learn tranny shift patterns for my driving style.
UNICHIP has nothing to do with shifts. Heck you could change the cams in these trucks and the MAF based computer would deal with the change instantly.
__________________ 2008 Tundra CrewMax Limited 4x4 5.7, White w/ oak leather, Moonroof, NAV, Factory 20's, XM.
2006 Nissan Murano SE Black, Loaded, Black leather, 20" Dubs
2005 Corvette C6 (#581) Coupe 6 spd Black, Loaded, Black Leather, Navigation, XM, Onstar, HUD, F55 Magnetic ride, Z51 Brakes/calipers/sway-bars, Route 66 Exhaust, Intake, Custom Tune, 160 stat. Only 2 runs at the track...12.4s @116mph
UNICHIP has nothing to do with shifts. Heck you could change the cams in these trucks and the MAF based computer would deal with the change instantly.
No, Unichip has nothing to do with shifts, but DISCONNECTING THE BATTERY does. The Tundra has an adaptive shift feature which learns your driving style. It has a default setting and then, over time, will begin to either delay shifts or shift early depending on your driving style. After you have your truck used to your style and you disconnect the battery, it will feel totally different. This is why I've been driving the $hit out of my truck after I installed the chip. I'm reteaching the transmission that generally I like delayed high rpm gas guzzling shifts instead of gas sipping early shifts. And try changing cams in this truck and see what that MAF based computer does. You think it throws fits on the dyno...
__________________
2007 Tundra 5.7 SR5 DC Slate Metallic w/ Sport Appearance package
2004 Mazda RX8 6-speed GT Brilliant Black: TRADED
Mods to date:
Unichip tuner
Flux software (arriving soon)
Volant Intake
Projector & LED headlights
Custom two tone leather seats
Stainless Steel running boards
Weathertech Floor Liners
Window tint
Royal Purple motor oil
This is why I've been driving the $hit out of my truck after I installed the chip. I'm reteaching the transmission that generally I like delayed high rpm gas guzzling shifts
A/F ratios of 15.1:1 are no problem at all on a modern aluminum headed engine like the 5.7 Tundra engine. In fact it wouldn't surprise me if you'd see A/F ratios of 16:1 or higher under light cruise conditions. This is how you get better fuel economy and as long as you have a knock sensor in the loop and look at your EGTs, you're ok. If this engine can run on 87 octane with 10.5:1 compression, it can deal with leaner A/F ratios with slightly higher octane fuel and likely have quite a bit more part throttle economy to begin with.
I don't know about that, man....
15:1 is lean. Lean is hot - especially under WOT. You run up a mountain burning 15:1 by the time you get to the top, who knows what you will have burnt, melted or fried...Not to mention the higher compression is already making things hot. Yes, during part-throttle cruising you may see AFR's as high as 16:1, but you are putting in less air and fuel - less heat.
I'm not disagreeing with you - But if it were my truck running 15:1, I'd be afraid to floor it up Wolf Creek in the middle of summer with my boat behind me. Personally I think 13-14:1 is the safest WOT AFR.
15:1 is lean. Lean is hot - especially under WOT. You run up a mountain burning 15:1 by the time you get to the top, who knows what you will have burnt, melted or fried...Not to mention the higher compression is already making things hot. Yes, during part-throttle cruising you may see AFR's as high as 16:1, but you are putting in less air and fuel - less heat.
I'm not disagreeing with you - But if it were my truck running 15:1, I'd be afraid to floor it up Wolf Creek in the middle of summer with my boat behind me. Personally I think 13-14:1 is the safest WOT AFR.
My .02...
The thing is we don't know all of the conditions that happened which caused his dyno reading. Was he truly at WOT when he saw the 15:1? He already admitted that all of his lights started flashing while it was on the dyno. It had never done that prior to him putting it on the dyno I bet. Who knows what the engine was doing after that.
__________________
2007 Tundra 5.7 SR5 DC Slate Metallic w/ Sport Appearance package
2004 Mazda RX8 6-speed GT Brilliant Black: TRADED
Mods to date:
Unichip tuner
Flux software (arriving soon)
Volant Intake
Projector & LED headlights
Custom two tone leather seats
Stainless Steel running boards
Weathertech Floor Liners
Window tint
Royal Purple motor oil
The thing is we don't know all of the conditions that happened which caused his dyno reading. Was he truly at WOT when he saw the 15:1? He already admitted that all of his lights started flashing while it was on the dyno. It had never done that prior to him putting it on the dyno I bet. Who knows what the engine was doing after that.
I know there are a lot of "it feels faster" posts here but spending $600 on go-fast parts has a way of doing that. The hard data that's coming in does not look good.
15.1 AFR under load and certainly at WOT is not right. Not only is it dangerous for your engine, but it wreaks havoc on the catalytic converter and produces enormous amounts of NOx.
The engineers at Toyota wanted the truck to run rich at WOT. Probably because of the higher compression engine design they used. Going lean (leaner than stoich even!) on an already high compression engine is nuts.
Tell unichip to release the datalogs of their runs. They stated that their chip's tuning "is perfect". Tell them to back it up.
The thing is we don't know all of the conditions that happened which caused his dyno reading. Was he truly at WOT when he saw the 15:1? He already admitted that all of his lights started flashing while it was on the dyno. It had never done that prior to him putting it on the dyno I bet. Who knows what the engine was doing after that.
ok finally home, a hole day in the rain, running power to a/c unit,gas line, craned a new a/c roof top i'm done home .. out of the rain
way we dyno'd was
we tried 2nd gear first.. wot.. than 3rd.. than 4th than 5th..
than we tried getting the speed up to 60mph than it would downshift automaticly into 3rd and yes i'm doing all my runs at wot
than we tried it at 65mph
we didn't run the truck very hot. took plenty of breaks, ambient temp was 65degree's
the dyno shop i was at isn't a noob, hes been the only one for the longest time here where i am.. untill just recent someone opened up a mustang dyno...
but
either way, being on a dyno having a wideband in the exhaust reading wuts coming out was 15.1afr..
I dont' understand how u guys can say the ecu/unichip still correcting the problem when the wideband reads 15.1 coming out of the exhaust
thundera is on the money where i was hoping the afr would have been 13-14.1
Unichip has attempted to contact That1Seven and I believe 2mtt also. Their phone calls and emails have not been answered. They asked me to apologize to you again for what happened yesterday. If you don't have time to respond, so be it, but don't say that they have poor customer service. they are attempting to contact you to remedy the situation.
my phone was on all day, didn't get one call from them
i gave you my phone number, i also left message yesterday on the technical support saying my problem
no pm or anything
The thing is we don't know all of the conditions that happened which caused his dyno reading. Was he truly at WOT when he saw the 15:1? He already admitted that all of his lights started flashing while it was on the dyno. It had never done that prior to him putting it on the dyno I bet. Who knows what the engine was doing after that.
abs light is on since front wheels arn't moving
4hi light blinks, vsc and something else
but shouldn't affect hp
if my truck was in limp mode why would it put 320whp down instead of 300 wut the chip put out?
ok finally home, a hole day in the rain, running power to a/c unit,gas line, craned a new a/c roof top i'm done home .. out of the rain
way we dyno'd was
we tried 2nd gear first.. wot.. than 3rd.. than 4th than 5th..
than we tried getting the speed up to 60mph than it would downshift automaticly into 3rd and yes i'm doing all my runs at wot
than we tried it at 65mph
we didn't run the truck very hot. took plenty of breaks, ambient temp was 65degree's
the dyno shop i was at isn't a noob, hes been the only one for the longest time here where i am.. untill just recent someone opened up a mustang dyno...
but
either way, being on a dyno having a wideband in the exhaust reading wuts coming out was 15.1afr..
I dont' understand how u guys can say the ecu/unichip still correcting the problem when the wideband reads 15.1 coming out of the exhaust
thundera is on the money where i was hoping the afr would have been 13-14.1
I spoke with Unichip a few minutes ago and they explained the three states that the Tundra uses. In the condition necessary to get a decent dyno run w/o downshifting, throttle is opened gradually until it reaches a point where it won't downshift. In this condition AfR is 12:5. Unichip corrects two points or so in open loop which puts it at 15:1. Unichip stated that this condition will only be seen on the dyno and in first and second gear under certain conditions just at V8hunter witnessed. The two conditions we will see most in open loop is hard acceleration with a downshift and slow acceleration with sustained load such as towing. In both these cases, the AFR's will be perfect. The thing we have to get past is that just because our AFR's are over stoich, doesn't mean the engine is about to blow. Stoich is established by the EPA for clean cats. AFRs of over 16:1 is common in Europe and perfectly safe. These aren't turbocharged vehicles guys. I can't explain everything Jack told me, but I'm sure with 30 years of experience, he knows more than anyone on this board about tuning. They are familiar with what That1Seven and V8 hunter experienced and they are confident that it is normal. They saw it on their dyno. On the street, your AFR's will be perfectly adjusted for all conditions. You guys can choose to be Chicken Littles and cry the sky is falling, or you can re-read Unichip's post and try to understand what is happening. Also, this condition will never be seen while towing a boat becasue the tundra will sense a sustained load which will richen the AFR's. Quite honestly guys, everything the Tundra is doing is beyond most of our understanding because we haven't studied it as long and as in depth as Unichip has. I choose to trust them over a screwed up dyno result.
__________________
2007 Tundra 5.7 SR5 DC Slate Metallic w/ Sport Appearance package
2004 Mazda RX8 6-speed GT Brilliant Black: TRADED
Mods to date:
Unichip tuner
Flux software (arriving soon)
Volant Intake
Projector & LED headlights
Custom two tone leather seats
Stainless Steel running boards
Weathertech Floor Liners
Window tint
Royal Purple motor oil
I know there are a lot of "it feels faster" posts here but spending $600 on go-fast parts has a way of doing that. The hard data that's coming in does not look good.
15.1 AFR under load and certainly at WOT is not right. Not only is it dangerous for your engine, but it wreaks havoc on the catalytic converter and produces enormous amounts of NOx.
The engineers at Toyota wanted the truck to run rich at WOT. Probably because of the higher compression engine design they used. Going lean (leaner than stoich even!) on an already high compression engine is nuts.
Tell unichip to release the datalogs of their runs. They stated that their chip's tuning "is perfect". Tell them to back it up.
Is that you Gadget? LOL! Unichip is not going to release proprietary information like that. Competitors would love to get this info. Toyota engineers wanted it to run rich because it is a SULEV vehicle! Its a big a$$ truck with a big a$$ engine that is SULEV rated! Something has to give. It has to run rich for emissions purposes not to protect the engine because of the compression ratio. We need to stop thinking of AFR's relative to turbo vehicles and comparing them to this truck. Most of us are armchair tuners who "heard" that anything over stoich is BAAAAAD! Its not true across the board.
V8Hunter also confirmed 0-60 increases of .4 seconds regardless of what one AFR snapshot in one gear may have been. the performance is measureable.
I believe LawDog spoke with Unichip and his issue was resolved. I forget what happened, maybe he used less than 93 octane.
Socaliallstar got slower after he put those headers on. He was faster stock. That's probably header related. He may need a custom tune.
Again, you guys can choose to believe what Unichip has stated, or not, but they won't keep coming here defending themselves. Bashing them will not help us at all. Why would they knowingly refuse to correct the maps if they believed something to be wrong? Do you think its in their interest that we blow engines? They are completely familiar with what is going on both on the dyno and the street. Just chill out guys.
__________________
2007 Tundra 5.7 SR5 DC Slate Metallic w/ Sport Appearance package
2004 Mazda RX8 6-speed GT Brilliant Black: TRADED
Mods to date:
Unichip tuner
Flux software (arriving soon)
Volant Intake
Projector & LED headlights
Custom two tone leather seats
Stainless Steel running boards
Weathertech Floor Liners
Window tint
Royal Purple motor oil
Re: Unichip Tuner
Linear Mode
