2005 TJ Rubicon - Boosted Technologies Supercharger Install

[bluescapegoat]

Hello all. best wishes for this new year!!!

@jjvw and @bluescapegoat, what are your IAT readings ind hot weather with the windstar air filter breathing from the cowl?.

My readings are very high, i know my air filter is breathing directly from engine bay, but in this days, with an ambient temperature of up to 93º f my IAT is between 150 without effort and 220 on boost (With methanol starting at 2psi).

Other thing, i installed a wideband. On normal operation, it moves between 14 and 15, and on 5 PSI Boost, it goes between 11 and 12. How do you see this numbers?. (I'm still with OEM injectors, Ford Racing 47# are on the way)

Thanks

Mariano

You said you had a local tuner that knew how to do stuff. What does he say?

I can't tell you off the top of my head without looking up the logs but your IAT temps sound right. It's really hot, I told you this was the main problem with the setup when I initially suggested you sell the kit and do a turbo. I think 200+ is pretty normal even from the cowl. The intake manifold is pressed against the exhaust manifold.

Also what happened with the injectors you had? What tune are you running? What size is your meth nozzle?

Stoich is 14.7. I ran factory setup with wideband for months to observe the factory tune and it'll run really lean, 15+ down the road sometimes and even higher at idle. That doesn't mean it's safe with elevated temps and custom tuning. You should be targeting 14.7 at idle and cruise and 10.5 or richer under full boost imo but I'm not a professional tuner. 12.0 seems very lean especially at those temps. Although with enough timing retard I suppose anything is safe, it's just a massive fuel waste at that point.

Again, not a tuner, but your shit sounds kind of unsafe at the moment

 

[bluescapegoat]

I just looked at my last tune (as I told you, still tuning in progress with FRP) I was usually 180-190 in boost with meth. Just touching 200 once it was really heat soaked on longer pulls. I've since installed a larger meth nozzle but haven't done any more logging.

180-190 cruising down the road. Between pulls.

 

[jjvw]

Hello all. best wishes for this new year!!!

@jjvw and @bluescapegoat, what are your IAT readings ind hot weather with the windstar air filter breathing from the cowl?.

My readings are very high, i know my air filter is breathing directly from engine bay, but in this days, with an ambient temperature of up to 93º f my IAT is between 150 without effort and 220 on boost (With methanol starting at 2psi).

Other thing, i installed a wideband. On normal operation, it moves between 14 and 15, and on 5 PSI Boost, it goes between 11 and 12. How do you see this numbers?. (I'm still with OEM injectors, Ford Racing 47# are on the way)

Thanks

Mariano

Without digging through recent posts, I recall the intake temps to be somewhere between just above ambient and about 80°F above ambient, all depending on wind direction, engine rpm, and who knows what else.

All I can tell you about the AFR gauge is that it points towards 15ish at idle and that it moves around a bunch when I do other things.

 

[mlozano]

You said you had a local tuner that knew how to do stuff. What does he say?

I can't tell you off the top of my head without looking up the logs but your IAT temps sound right. It's really hot, I told you this was the main problem with the setup when I initially suggested you sell the kit and do a turbo. I think 200+ is pretty normal even from the cowl. The intake manifold is pressed against the exhaust manifold.

Also what happened with the injectors you had? What tune are you running? What size is your meth nozzle?

Stoich is 14.7. I ran factory setup with wideband for months to observe the factory tune and it'll run really lean, 15+ down the road sometimes and even higher at idle. That doesn't mean it's safe with elevated temps. You should be targeting 14.7 at idle and cruise and 10.5 or richer under full boost imo but I'm not a professional tuner. 12.0 seems very lean especially at those temps. Although with enough timing retard I suppose anything is safe, it's just a massive fuel waste at that point.

Again, not a tuner, but your shit sounds kind of unsafe at the moment

Thanks for the reply.

Yes, i took the jeep to the dyno with the local tunner, but i had one bad injector and didn't finished the tunning. I got back home and installed the OEM injectors until i receive the ford racing 47 LB/HR.

I'm using the 500cc nozzle i think (The AEM kit comes with 3, i used the middle one).

When i get the new injectors i will go to the dyno and finish the running and i will check the temps again in order to make improvements to reduce temperature.

 

[bluescapegoat]

Thanks for the reply.

Yes, i took the jeep to the dyno with the local tunner, but i had one bad injector and didn't finished the tunning. I got back home and installed the OEM injectors until i receive the ford racing 47 LB/HR.

I'm using the 500cc nozzle i think (The AEM kit comes with 3, i used the middle one).

When i get the new injectors i will go to the dyno and finish the running and i will check the temps again in order to make improvements to reduce temperature.

I wouldn''t run it at all until you have the new injector. You're just running lean.

As for the meth nozzle, I started at an Snow 625cc and as of most recent tune am up to a 1009cc nozzle.

IT RUNS HOT.

 

[jjvw]

I am currently running the SNO-N0150 nozzle which is just under 100ml/min on the meth. It does not run hot.

 

[mlozano]

I wouldn''t run it at all until you have the new injector. You're just running lean.

As for the meth nozzle, I started at an Snow 625cc and as of most recent tune am up to a 1009cc nozzle.

IT RUNS HOT.

Ok, thanks, i will try with the 1.000cc nozzle that came with the kit.

How many methanol are you using / how often do you refill the tank?

Here is a pic i took from a video testing. The boost gauge was at 5PSI and AFR was at 11,1. Anyway, i'll wait for the new injectors and also will connect the Wideband to HP Tunners for dataloging.

Thanks

Mariano

 

[bluescapegoat]

I am currently running the SNO-N0150 nozzle which is just under 100ml/min on the meth. It does not run hot.

What IAT does it get up to on a long pull at full boost?

 

[jjvw]

What IAT does it get up to on a long pull at full boost?

Never seen it above the low 100s over ambient in this current setup.

 

[mlozano]

I am currently running the SNO-N0150 nozzle which is just under 100ml/min on the meth. It does not run hot.

How many PSI have you setted the start / end of the meth injection?

 

[jjvw]

How many PSI have you setted the start / end of the meth injection?

It starts at about 3psi and maxes out around 5psi, all according to the boost gauge. Max boost is pushing 8psi.

 

[bluescapegoat]

Never seen it above the low 100s over ambient in this current setup.

Lows 100s over ambient is warm but mostly jives with what I've seen, but not at that nozzle size. You're also still running the 7th injector pre-superchager, right? That could be doing the rest of the lifting. My 180-190 IATs I referenced in the most recent log were at an 81° ambient. Looking through some pulls are 170ish but the highs are what matters.

 

[MikeE024]

Not a SC setup, but I got plenty of cooling with the 500cc AEM nozzle @5-6 psi...it would drop me from 210* to 130* or lower if I was injecting more than I needed to (these numbers varied depending on the boost level and my settings).

What is your max setting on the WM controller? If the max is set too high then you won't get the cooling you want when you are moving more air. For example, if your max is set to 20 psi (100% duty cycle), then your duty cycle is under 50% at 6psi. You should be able to see your IATs drop and your AFRs richen if you are using enough WM injection.

FWIW, my Banks tune keeps me around .80 Lambda (11.8 AFR) without WM injection.

I tracked things in Lamba because a reading of 1.0 is always stoich when mixing pump gas and methanol (stoich is 6.4:1 for methanol when using an AFR display). That said, water is also mixed in and the conversation gets more interesting on why readings will look richer from water even though water is inert (possibly because steam affects the o2 sensor's reading since it's reporting the oxygen concentration).

Hopefully your tuner understands the variables in play.

Edit: I should add that my current tune works well at .80 Lambda because my intake temps are reasonable. The original Banks tune that I ran for a short time would richen things as IATs increased, while the revised tune seems to keep the AFRs pretty consistent and avoids detonation by pulling timing as IATs increase (turbo was making noises but I wasn’t feeling much power).

 

[jjvw]

Lows 100s over ambient is warm but mostly jives with what I've seen, but not at that nozzle size. You're also still running the 7th injector pre-superchager, right? That could be doing the rest of the lifting. My 180-190 IATs I referenced in the most recent log were at an 81° ambient. Looking through some pulls are 170ish but the highs are what matters.

Mine is the Boosted Tech kit as it falls out of the box, including the 7th injector and the Split Second piggy back controller, with the exception of the IAT sensor moved to below the SC and the addition of meth injection and a true cold air intake.

All I can say is that once I got the installation correct with no vacuum leaks, this has been a seamless and invisible increase in power. All anyone would know is that my Jeep is faster and pulls harder than it ought to. I do not know if I even need the meth injection, but it exists on mine because of people complaining about BT on the internet. It stays installed because it is either helping or it is a safety net. I don't know which.

 

[mlozano]

Hello all

Anyone can help me with the diameter of this idler pulley? (Ideally in mm).

The previous owner of the supercharger lost that pulley and replaced with just a couple of bearings together, but they are smaller, so I want to fabricate the pulley on the right original size.

Thanks

Mariano