Thanks!!Where do you see your improvement in power?I feel mine more like in the middle of low to mid-range. if that makes since
From the dyno charts I have posted, I saw improvement across the entire rpm range (which was only about 1500-2000 rpm worth - so top end). I'd say overall though, it was as much on the low end as the high end, and throttle response was also improved - which improves overall driveability.
Does your tune change any of the shifting characteristics?
I'm tired of the sluggish shifts that let the engine hang at high RPM's(4k-5k) before it makes up it's mind to shift...
Mine shifts fine at either WOT and when granny driving... anything in between it does this hanging crap.
I'd love to find someone that could tune that out... As with my driving, I like to get to speed quickly(point of the SC) and then let off when nearing the speed limit... The way this truck acts, is that it sees that I'm ready to go, but when I back off the throttle a bit, it can't figure out how to shift cause it wants to keep hauling... Like their(TRD) throttle position mapping is retarded... Or the tranny needs to be tuned...
The delay that DawgBonez is describing is more of a software issue as opposed to a hardware issue. Like he said, it shifts great at high and low throttle inputs. WOT shifting seemed to improve when they released the cold temp reflash (they mentioned part of the reflash was shift improvement). But at medium throttle inputs, it seems to hang on to the gear too long before shifting (like its always in tow/haul mode) - I am also annoyed by this. This problem seemed to get worse with the re-flash as well. I'm sure it is a programming issue from TRD, not sure why they decided to do this...
The delay that DawgBonez is describing is more of a software issue as opposed to a hardware issue. Like he said, it shifts great at high and low throttle inputs. WOT shifting seemed to improve when they released the cold temp reflash (they mentioned part of the reflash was shift improvement). But at medium throttle inputs, it seems to hang on to the gear too long before shifting (like its always in tow/haul mode) - I am also annoyed by this. This problem seemed to get worse with the re-flash as well. I'm sure it is a programming issue from TRD, not sure why they decided to do this...
That may just be a sign that your clutches are worn out from too much power. which is why I posted the link
That may just be a sign that your clutches are worn out from too much power. which is why I posted the link
But you could also be right.
it's been there since delivery... And still there after the latest flash...
More/over... It shifts nicely at WOT, which I would think is closer to max HP...
But given the load at that point of the curve/powerband, you're probably onto something... Although I still think it could be corrected in tune somewhere..
I do have to add that the power versus throttle input seems a bit off for me... I really have to mat on the throttle pedal to FEEL the S/C... Even if the tranny doesn't kick down, it still takes a good amount of pedal to get the truck to pull like I would exspect.
That may just be a sign that your clutches are worn out from too much power. which is why I posted the link
But you could also be right.
If clutches were worn, wouldn't it slip at higher torque/throttle inputs? Like I said, this thing shifts impressively well at WOT - not too firm and very, very quick...
Hey Fellas,
I'm new to the forum and Tundra community. I just purchased a used 07 double cab a couple weeks back (17K miles) and have been modifying here and there. Mostly I've done cosmetic work, audio/video upgrades, functional upgrades (line-x, alarm, etc). Later this year, depending on how business goes I'd like to do all the performance upgrades (SC, headers, exhaust, sway bar kit, and some kind of programming set). Any other suggestions on squeezing more ponies out of this 5.7L?
I don't know much about the A/F ratios on forced induction vehicles. I have learned from this forum that tuning makes a huge difference with that many mods. But this is the first thread I've heard about the URD MAF Calibrator. Most other sites and threads I've come across talk about the Unichip (good and bad). Just curious why you guys went with the MAF Calibrator instead of the Unichip?
Also, I'm considering having my friends at Jotech Motorsports here in Dallas do all the work and tuning. I know if I go with someone other than the dealer to install the SC, it's warrantied for only 12,000 miles. For those of you with the SC, is it reliable enough to risk having someone other than the dealer install it?
Hey Fellas,
I'm new to the forum and Tundra community. I just purchased a used 07 double cab a couple weeks back (17K miles) and have been modifying here and there. Mostly I've done cosmetic work, audio/video upgrades, functional upgrades (line-x, alarm, etc). Later this year, depending on how business goes I'd like to do all the performance upgrades (SC, headers, exhaust, sway bar kit, and some kind of programming set). Any other suggestions on squeezing more ponies out of this 5.7L?
I don't know much about the A/F ratios on forced induction vehicles. I have learned from this forum that tuning makes a huge difference with that many mods. But this is the first thread I've heard about the URD MAF Calibrator. Most other sites and threads I've come across talk about the Unichip (good and bad). Just curious why you guys went with the MAF Calibrator instead of the Unichip?
Also, I'm considering having my friends at Jotech Motorsports here in Dallas do all the work and tuning. I know if I go with someone other than the dealer to install the SC, it's warrantied for only 12,000 miles. For those of you with the SC, is it reliable enough to risk having someone other than the dealer install it?
Thanks for the advice in advance.
A couple good questions. I'll do my best to answer them keeping in mind my word should not be taken as gospel.
Advantages that I feel the URD MAF Calibrator has over the Unichip - to list a few:
1) Cheaper (by almost double - not including dyno time)
2) Anyone who does tuning can tune the MAF Cal. using just a laptop and a wideband O2 sensor setup - Unichip requires a certified individual to tune, I believe.
3) When custom tuned, fuel map matches your specific vehicle ECU, equipment, sensors, aftermarket part, etc. A canned tune from Unichip will never be as good a custom fine tune (unless the Unichip is tuned on a dyno = even more $$)
4) Better customer support
In my opinion, the 5.7L TRD supercharger kit is one of the most fully integrated, highest quality kits you can buy non-factory. If you have someone who truly knows what they are doing and is willing to spend an entire day or two replacing fuel injectors, dropping the fuel tank and replacing the fuel pump, tearing apart the whole intake side of the engine and the front of the truck then I would say absolutely its reliable enough to have installed by someone other than a dealer. The determining factor of reliability here falls on the installation, not the TRD parts. Also, don't forget that you will need to visit a dealer before driving to get the TRD S/C ECU reflash.
DawgBonez Re: TRD 5.7L Supercharger - Dyno Test & Tune
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I'm tired of the sluggish shifts that let the engine hang at high RPM's(4k-5k) before it makes up it's mind to shift...
Mine shifts fine at either WOT and when granny driving... anything in between it does this hanging crap.
I'd love to find someone that could tune that out... As with my driving, I like to get to speed quickly(point of the SC) and then let off when nearing the speed limit... The way this truck acts, is that it sees that I'm ready to go, but when I back off the throttle a bit, it can't figure out how to shift cause it wants to keep hauling... Like their(TRD) throttle position mapping is retarded... Or the tranny needs to be tuned...
I agree 100%
__________________ 07 Tundra Ltd. 4x4 5.7L.
ARB Winch Bull Bar Bumper c/w Warn 9.5XP Winch, and the Light Force 170 Striker driving lights Fab Fours Bumper ProComp --- Alcan Leafs (6" lift) c/w TC shackles --- Icon Coil overs P/N# IVD5-8650 c/w 4.25" spacer MBRP 3.5" Exhaust - modified Weston - Oval 2 Heim U.C.A Hellwig Sway Bar - modified BFG KM2 Mud Terrains - 37" --- KMC Wheels: XD series Monsters – 20 x 9 Nitto Terra Grapplers - 35" --- American Racing: Thugs - 18x9 Bushwacker Fenders Mobil 1 & Amsoil Synthetic Line-X P.E JackRabbit Bed Cover Black Front Grill TRD SC Tiregate - Bed mount Series VI c/w BlendMount Bracket Garmin 255W
I also wish there was a 1st gear lockout option. Some cars/trucks/SUV's you can shift into 2 while stopped and the tranny will start out in 2nd gear. Plenty of torque to get the beast going from a stop in 2nd - I bet it would help gas mileage too as the 1st gear shift never happens below 3k rpm it seems like.
How many miles do you have on your rig? Or how many miles since the SC?
I ask, as I just hit 10k, and I'm finding that it's not doing it any more, at least not anything like it was...
I seriously hope that it doesn't take 10k miles to learn how to shift... I curse the day that they have to flush out the TCU, if that is the case...
DawgBonez Re: TRD 5.7L Supercharger - Dyno Test & Tune
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How many miles do you have on your rig? Or how many miles since the SC?
I ask, as I just hit 10k, and I'm finding that it's not doing it any more, at least not anything like it was...
I seriously hope that it doesn't take 10k miles to learn how to shift... I curse the day that they have to flush out the TCU, if that is the case...
I guess there is also break in to consider...
4000 miles later and stilll no change.
__________________ 07 Tundra Ltd. 4x4 5.7L.
ARB Winch Bull Bar Bumper c/w Warn 9.5XP Winch, and the Light Force 170 Striker driving lights Fab Fours Bumper ProComp --- Alcan Leafs (6" lift) c/w TC shackles --- Icon Coil overs P/N# IVD5-8650 c/w 4.25" spacer MBRP 3.5" Exhaust - modified Weston - Oval 2 Heim U.C.A Hellwig Sway Bar - modified BFG KM2 Mud Terrains - 37" --- KMC Wheels: XD series Monsters – 20 x 9 Nitto Terra Grapplers - 35" --- American Racing: Thugs - 18x9 Bushwacker Fenders Mobil 1 & Amsoil Synthetic Line-X P.E JackRabbit Bed Cover Black Front Grill TRD SC Tiregate - Bed mount Series VI c/w BlendMount Bracket Garmin 255W
Re: TRD 5.7L Supercharger - Dyno Test & Tune
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