The 3.4L TRD Supercharger Thread

[MTD]

. my truck runs awesome now (for having only 6 injectors) and saved me a ton of time and money.

My truck runs great on 6 injectors, only way to be lol!

 

[RussToy]

And did you buy the gapping tool or have them gapped somewhere?

I gapped them myself. Just take your time and be very careful not to bend the center piece.

 

[Aelfwine]

I got my snout rebuilt for $20 and a bottle of vodka) No noise, works smooth. Still waiting for a new bypass valve as mine was shot. My question is can I drive without a bypass valve for now? If so what position should I block the lever in?

 

[JamesDean91]

About to install the 7th ecu in my runner and I will have 3 extra wires. Does anyone know what they are for?
White
Orange
White/green stripe

Also I have a wideband a/f gauge with data logging. It has 3 wires for the analog output. Do I connect any of these wires with the Urd 7th?
First time getting this far in tuning stuff so any help would be awesome. I figured the Urd would be better spliced into the wideband 02 vs the stock 02 also.

 

[MTD]

About to install the 7th ecu in my runner and I will have 3 extra wires. Does anyone know what they are for?
White
Orange
White/green stripe

Also I have a wideband a/f gauge with data logging. It has 3 wires for the analog output. Do I connect any of these wires with the Urd 7th?
First time getting this far in tuning stuff so any help would be awesome. I figured the Urd would be better spliced into the wideband 02 vs the stock 02 also.

You need to splice in the stock o2 because you have to modify the signal from it so that ecu does not trim out the extra fuel you are adding. And I just found out the other day you cannot input the signal from your Wideband into the URD box like you can with the AEM unit. It has to be recorded separate and I know A Wilson has a way to get around that little pain in the ass.

 

[MTD]

I got my snout rebuilt for $20 and a bottle of vodka) No noise, works smooth. Still waiting for a new bypass valve as mine was shot. My question is can I drive without a bypass valve for now? If so what position should I block the lever in?

I well you won't make any boost but the lever would have to be out.

 

[JamesDean91]

You need to splice in the stock o2 because you have to modify the signal from it so that ecu does not trim out the extra fuel you are adding. And I just found out the other day you cannot input the signal from your Wideband into the URD box like you can with the AEM unit. It has to be recorded separate and I know A Wilson has a way to get around that little pain in the ass.

Alright will do.
Is there a thread where he speaks of it? Or just wait for him to reply lol. I have 2 different gauges. Innovative motorsports(forgot model) and the new gauge to match everything else glowshift wideband with data logging. Is the data logging worth it? Or just wire it in as is and go from there.

 

[MTD]

Alright will do.
Is there a thread where he speaks of it? Or just wait for him to reply lol. I have 2 different gauges. Innovative motorsports(forgot model) and the new gauge to match everything else glowshift wideband with data logging. Is the data logging worth it? Or just wire it in as is and go from there.

I think it is not worth it but instead 100% nessecary. He spoke about it here actually, I'd pm him though if I were you. Use the innovate, gs is usually junk

 

[JamesDean91]

I think it is not worth it but instead 100% nessecary. He spoke about it here actually, I'd pm him though if I were you. Use the innovate, gs is usually junk

Yeah I have heard about that but I'm ocd and like my gauges matching. Have never had a problem in diesel rigs with these gauges.

 

[anniesball72]

Ltft

They change constantly but the closer to zero the better on your ltft ( long term fuel trim)

Thank you, it was my understanding they should be closer to zero. Mine on the other hand are +7. I have no check engine light and the truck runs great.
I have the 7th injector. I have checked for vacume leaks on the intake side but found nothing.

 

[MTD]

Thank you, it was my understanding they should be closer to zero. Mine on the other hand are +7. I have no check engine light and the truck runs great.
I have the 7th injector. I have checked for vacume leaks on the intake side but found nothing.

You won't get a check engine light from the tune being thrown off and as long as they aren't 20+ out you won't see any issues with how the truck runs.

 

[anniesball72]

Ltft

You won't get a check engine light from the tune being thrown off and as long as they aren't 20+ out you won't see any issues with how the truck runs.

So am I OK? That is what I'm trying to determine. I'm not sure how much the supercharger and URD throw the factory tune off. It may have always been this way. My only concern is that everyone says it should be 0 and mine is not. STFT bounces all over the place, but if the throttle and grade is constant it returns to 0.

 

[MTD]

So am I OK? That is what I'm trying to determine. I'm not sure how much the supercharger and URD throw the factory tune off. It may have always been this way. My only concern is that everyone says it should be 0 and mine is not. STFT bounces all over the place, but if the throttle and grade is constant it returns to 0.

Short term fuel trim is pretty much useless just completely disregarded long term fuel trim is what you want to look at. Anything between 0 and 5/8 a is acceptable for long term fuel trim if it isn't at that you're going to have to adjust your 02 values and your fuel values accordingly. I'd say at 7 you'll probably be fine driving it and it shouldn't cause an issue like I said you won't see anything major happen until it hits 20 which is the maximum that the ECU can correct for

 

[anniesball72]

Short term fuel trim is pretty much useless just completely disregarded long term fuel trim is what you want to look at. Anything between 0 and 5/8 a is acceptable for long term fuel trim if it isn't at that you're going to have to adjust your 02 values and your fuel values accordingly. I'd say at 7 you'll probably be fine driving it and it shouldn't cause an issue like I said you won't see anything major happen until it hits 20 which is the maximum that the ECU can correct for

Thanks again. I feel better. To more accurately state the LTFT is is about 7 at idle and 3-4 at 2500rpm.

 

[dhalsey]

2001 + throttle bracket

Hey guys thanks in advance for any advice you have. I have the throttle bracket for models before 2000. Has anyone modified this bracket to work with the 2001-2002. I have found a couple pictures online but its hard to see what was done or if it was a custom bracket. I really don't want to shell out the 166.00 for the kit when I have everything else.

 

[allwheeldrive]

I made my own custom bracket. Same boat as you, didn't want to buy a kit for 1 three dollar part.

 

[dhalsey]

I made my own custom bracket. Same boat as you, didn't want to buy a kit for 1 three dollar part.

I haven't been able to find yet, but has anyone posted the dimensions of the 2001+ bracket that you found?

 

[firedog90]

I haven't been able to find yet, but has anyone posted the dimensions of the 2001+ bracket that you found?

If you decide to make a custom bracket and part with that one, I'll buy it from you if it will work on a manual.

 

[volkinator]

Hey guys thanks in advance for any advice you have. I have the throttle bracket for models before 2000. Has anyone modified this bracket to work with the 2001-2002. I have found a couple pictures online but its hard to see what was done or if it was a custom bracket. I really don't want to shell out the 166.00 for the kit when I have everything else.

I replied to your PM. I've got mine for a 01+ installed, but could do a trade with ya.

 

[MTD]

Thanks again. I feel better. To more accurately state the LTFT is is about 7 at idle and 3-4 at 2500rpm.

Your LTFT will be different throughout the rev range since it is a part of the fuel map. You will need to tune the entire range from the start of boost until WOT to have a solid tune.