Topic: Look what I got fellas...

[sharpxmen]

i re-read the initial post on this thread and checked the pics, looks like you have the enricher already and you have the FTC1

if your max boost is 4.5psi as reported by road2damascus most likely you won't need to retard timing, just use a colder spark plug (by 2) and high octane gas. Don't bother installing the intercooler as the way it is being before the supercharger it will not cool the charge and since it is cooling with the same air as the one you are pulling in it will just do nothing (probably hurt the flow).

the FTC1 comes with a pre-loaded values table, if you are unsure what's loaded in it send an email to split second and ask for a generic one for 4.5psi and 5250 max rpm - that should get you started and you can fine-tune from there.

[moparstroup]

thnx so much. what to you think about that regulator. i saw your post about it but what i dont understand is both big ports ( the ones you can blow through) were hooked to the fuel rail. the one that feels restricted is where his fuel supply came from, how could this possibly work? besides my tj has a returnless fuel system so if i were to cap the end of the fuel rail and use the open big port on the side of regulator  for fuel inlet what do i do with the return port. i assume it needs it to dump off excess fuel pressure. i am ready to wire in the split second modules but dont want to run it till i am sure about the regulator. i just took for granted since unit was all assembled that it was correctly assembled. then after pulling the hoses off the regulator and finding clumps of orange silicone inside regulator i started to question things.

[sharpxmen]

i thought you have a YJ - unfortunately the TJ has a returnless fuel rail, just work with that, start with sizing the fuel injectors properly and work your way from there with the Split second, there's no easy way to modify your system for a return type. only problem is that you won't have boost reference for the fuel rail, so whatever the boost pressure you'll be running you'll have to substract it when calculating injector flow

for example if you'll have 4.5psi, you should use 49-5= 44psi fuel pressure (49 is TJ stock pressure).

stock injector is 23.2lb/hr, the ones you have if i remember correctly are 24 and 30 lb/hr at 39.9 psi

you'll need around 34lb/hr injector flow for 5psi boost (10% richer AFR at 5psi boost compared to stock normally aspirated AFR at WOT)

since you cannot change the fuel pressure use the 30lb/hr ones which would result in 31.5lb/hr at 44.5 psi, should be close enough but not perfect (you'd be straight up around the same AFR as with normally aspirated but you can start with this and upgrade later, it's fairly close)

ditch the regulator that came with the kit and hook up the rail to the fuel line on your TJ (use 1 end and plug the other).

use the FTC and the enricher to adjust your AFR

[sharpxmen]

couple of corrections to my previous post

for example if you'll have 4.5psi, you should use 49-5= 44psi fuel pressure (49 is TJ stock pressure).

should read: for example if you'll have 5psi, you should use 49-5= 44psi fuel pressure (49 is TJ stock pressure).

since you cannot change the fuel pressure use the 30lb/hr ones which would result in 31.5lb/hr at 44.5 psi

should read: since you cannot change the fuel pressure use the 30lb/hr ones which would result in 31.5lb/hr at 45 psi

[moparstroup]

nevermind i answered my own question only thing is the return from the regulator. now along side the fuel supply line down the drivers side frame is an additionol smaller line that goes to the tank also. even though i have a returnless fuel rail  this looks like a line assembly built for return. anyone know if this is a return line or just some type of vent line? i temporary plugged regulator return to it and it seemed to work ok. blower on and running.

[sharpxmen]

nevermind i answered my own question only thing is the return from the regulator. now along side the fuel supply line down the drivers side frame is an additionol smaller line that goes to the tank also. even though i have a returnless fuel rail  this looks like a line assembly built for return. anyone know if this is a return line or just some type of vent line? i temporary plugged regulator return to it and it seemed to work ok. blower on and running.

that smaller line is for the evap canister

you can leave the regulator there but it won't do anything other than connecting the hoses

do you have a wideband yet? if not i'd be cautious taking any trips until you do. Another way to try and tune it is to find a steep long uphill, keep it at a constant rpm and boost and monitor the afr, adjust the split second on several rpms and boost levels and try to blend around those cells.

[moparstroup]

THANK YOU SO MUCH. I FIGURED THE REGULATOR WAS NOT GONNA WORK, DID NOT GET WIDEBAND YET AND JEEP WONT BE GOING ON ANY LONG TRIPS TILL I GET ONE AND AM SATISFIED WITH THE ADJUSTMENTS. HAPPY TO HEAR INJECTORS ARE CLOSE ENOUGH TO GET STARTED, I DO HAVE A SPEED SHOP WITH A DYNO THAT IF ALL ELSE FAILS COULD USE TO MAP THE FTC-1 ABOUT 20 MILES AWAY.GONNA BE PRICEY THOUGH. CHEAPER THAN AN ENGINE THOUGH I GUESS,

[sharpxmen]

i'm not sure if they will do a better job than you with a wideband/map/rpm logging (map = manifold air pressure, not the fuel map in the FTC) and probably cheaper in the end. there are hundreds of cells in that table, i don't think they'll go thru all of them (just time consuming, on the other hand you can start the logger, drive around and at the end of the session will generate a table with MAP and rpm on axis and AFR in the cells).

[moparstroup]

does the afr logger work like a data recorder or copilot in the chrysler scan tool? let me run something by you. the previous owner had this installed in a tj and i saw his posts on another forum when he could not get his jeep to run right. after several posts looking for advise the last post was for sale 1 rimmer supercharger... one thing he said was at 2000 rpm it had a bad hesitaion and you could smell raw fuel. i dont think he ever figured it out. now i have it installed on my tj and with just the s/c installed i ran the vehicle let it learn idle (it seemed like it had a tremendous vac leak, high idle, would not take any fuel without bogging. after short term adaptive started kicking in i took it out in the road for a very short road test (1 mile)  at 2000 rpm it hestitates and raw fuel smell. enough that i thought a fuel line came off.  second  my tj used to feel very smooth but now it feels like when you see an in car camera in a funny car. i assume alot of this is due to wrong afr but is the vibration in the engine (not driveline) seem normal to you at this point in the process?  when this is properly tuned will the engine run smoothly under boost? what concerns me is rimmer and avenger used to put these out with nothing but the adaptive capabilities of the pcm. i hope this thing doesnt feel like this when i am done with it. hoping for some encoraging words here sharp.

[sharpxmen]

the adaptive learning is for closed loop, which you don't want when you're in boost. You need to use the enricher to give it more fuel once the boost starts to kick in (even a tad earlier) - what you need to understand is that with the FTC1 your pcm reads the manifold absolute pressure at 0 boost something like you were 1/2 way on the throttle before, that means the pcm is in closed loop when actually should be in open loop. The other thing is that you are probably too rich ( when you smell fuel ) when not in boost and possibly lean when in full boost, so without proper tuning it just won't work (regardless of the adaptive learning, there is a limit at which it won't adjust being out of it's limits). with a TJ you can get some OBDII logger combined with a wideband, i don't know how accurate it would be as i have an OBDI and never used it that way, but whatever you decide to go with i'm sure their instructions are clear as to what the capabilities are. Think of all this as individual components that need to be adjusted to work as a kit, the kit itself is not plug and play and since your engine was running fine before it should be running fine once you tune it properly. If you're trying to use this without the FTC1 don't even bother, it won't work (there is no boost reference with your stock MAP sensor, it stops at 0 vac/boost reference so anything past that you're "flying blind").

[moparstroup]

so it seems like things are where they should be at this point in the process, runs, but not right. have no intention of running it this way just wanted to see if the s/c made boost so i could go further. if this sounds like the norm for this point im good with that. wiring in ftc-1 and enricher  this week then start the mapping process. i think i have access to chryslers drbIII  to watch all sensors so i will let you go on and help some other people for a while. again thank you for your support. do you know if there are many other people on this forum running superchargers?

[sharpxmen]

i ran one on mine, now it's off and will go back in hopefully this summer
otherwise there are about 3 turbos, St.Chevrolet is the one running the longest as far as i know.