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Topic Review (Newest First)
Today 09:51 PM
Soup Man Now since this is a go to for every issue.

2002 LQ9 with a whipple supercharger from a 2001 era 6l pick up truck.

When the MAF is plugged in - it idles about 3500 rpm, have throttle response and no codes.
Unplugged - it idles fine, throttle response is crisp, but dies after about 30 seconds. Throws a MAF code (obviously)

Any ideas where to start.

The computer was set of VATS removal and emissions removal.

The tune was not for the supercharger however. Is this something as simple as tune for charger is wrong?


Thanks in advance.
Today 05:44 AM
blackwidow98
Electrical

Probably the wrong place for this but if anyone needs a complete harness for a 5.3, a computer, or the tac module/pedal assembly I have all three off an 05 L33
11-18-2014 08:24 PM
Roaddawg Both sound good thanks.
11-17-2014 09:14 AM
osubeaver
Quote:
Originally Posted by Roaddawg View Post
Does anyone know of a reasonably priced hand held scanner to carry to check codes if the check engine light comes on while on a trail run?
I like the Torque app on my phone. You need to buy a bluetooth dongle to fit in the OBD port. It's cheap and works great.
11-15-2014 06:43 AM
aloharover I purchased an OBD-II scanner from the local auto parts store. It was maybe 50$.
Has a 3' cord. I can read codes and erase them
11-15-2014 04:34 AM
Roaddawg
Hand held scanners

Does anyone know of a reasonably priced hand held scanner to carry to check codes if the check engine light comes on while on a trail run?
11-14-2014 09:27 AM
waynehartwig
Quote:
Originally Posted by WelldoneCJ7 View Post
Anyone know of a longtube header that will fit a ls swap in a cj7 that status in frame? I have seen stock manifolds, shorties that work in frame and then the longtubes that exit frame but just wondering if anyone has seen or used a longtube that will fit while staying in frame?
Unless you are going to wrap it and/or coat it inside and out, long tubes are power robbers
11-14-2014 12:18 AM
WelldoneCJ7 Anyone know of a longtube header that will fit a ls swap in a cj7 that status in frame? I have seen stock manifolds, shorties that work in frame and then the longtubes that exit frame but just wondering if anyone has seen or used a longtube that will fit while staying in frame?
11-13-2014 10:50 AM
Gemner Yeah, there's no lag. Some people will associate the different throttle curve as being lag, but that's not really accurate. What you can do to change the feel is pretty much endless. Any tuner is capable of changing the throttle opening curve to give you a snappier feel, but the reality is all that is doing is opening the throttle further at a given pedal position (this is what products like the sprint booster do). If you want it real snappy, have them set the throttle to ramp to 100% open at 50% throttle position. That'll make you forget all about lag and make you wish you had installed one of those laggy cable TBs.
11-13-2014 09:44 AM
aloharover
Quote:
Originally Posted by blackwidow98 View Post
Ok then, that being said.. Who is the best tuner on these computers to get rid of the lag in dbw?
What lag?
11-13-2014 07:36 AM
blackwidow98
Quote:
Originally Posted by Gemner View Post
Aside from the fact that all your notions about DBW are complete nonsense, you can use some newer DBW computers on a cable throttle body. And no you wont lose any performance with an older computer, assuming you get the computer tuned.

New Page 1

Also, theres this

https://www.youtube.com/watch?v=h5_68KBi_fo
Ok then, that being said.. Who is the best tuner on these computers to get rid of the lag in dbw?
11-12-2014 04:47 PM
waynehartwig
Quote:
Originally Posted by blackwidow98 View Post
The jeep forum isn't much help on the L33 I'm dropping in my 98 TJ Wrangler. I'll be here a lot more throughout my conversion. My L33 came 100% complete from an 05 GMC Truck with a DBW throttlebody, tac pedal, and computer #12589463 but I'm skeptical on the electrical throttle system. My problem is that I also have a DBC throttlebody, harness, & computer #09354896 from an earlier Silverado (year unknown) 99-00? Can they be swapped out and the L33 perform correctly to FULL potential with an older computer vs the original? My engine is the hopped up version of the 5.3 with different heads and cam. Would I be downgrading on performance with a 99-00 normal 5.3 computer rather than my original 05 computer it came with from factory? I will never use cruise control either. My jeep will be a straight drive and used for moderate rock crawling.. Instant throttle respond is a must for safety on the steep trails. NO LAG and that's what drives me away from dbw. Plus I don't want to short out the pedal in a creek or smthn and it get stuck wide open or not at all.
Quote:
Originally Posted by feva4u View Post
You sound a person that reads on jeep forum about DBW. It's fine, use it.
This...


But yes, you can run the older 5.3 harness/PCM on the motor. Everything you would buy for the motor at that point would be fore the older rig. Like sensors, etc..

I can also modify the harness for DBC. Depending on the PCM, it might have the controls in it already. If not, a different PCM would be necessary.
11-12-2014 11:25 AM
Gemner
Quote:
Originally Posted by blackwidow98 View Post
The jeep forum isn't much help on the L33 I'm dropping in my 98 TJ Wrangler. I'll be here a lot more throughout my conversion. My L33 came 100% complete from an 05 GMC Truck with a DBW throttlebody, tac pedal, and computer #12589463 but I'm skeptical on the electrical throttle system. My problem is that I also have a DBC throttlebody, harness, & computer #09354896 from an earlier Silverado (year unknown) 99-00? Can they be swapped out and the L33 perform correctly to FULL potential with an older computer vs the original? My engine is the hopped up version of the 5.3 with different heads and cam. Would I be downgrading on performance with a 99-00 normal 5.3 computer rather than my original 05 computer it came with from factory? I will never use cruise control either. My jeep will be a straight drive and used for moderate rock crawling.. Instant throttle respond is a must for safety on the steep trails. NO LAG and that's what drives me away from dbw. Plus I don't want to short out the pedal in a creek or smthn and it get stuck wide open or not at all.
Aside from the fact that all your notions about DBW are complete nonsense, you can use some newer DBW computers on a cable throttle body. And no you wont lose any performance with an older computer, assuming you get the computer tuned.

New Page 1

Also, theres this

https://www.youtube.com/watch?v=h5_68KBi_fo
11-12-2014 09:52 AM
feva4u
Quote:
Originally Posted by blackwidow98 View Post
The jeep forum isn't much help on the L33 I'm dropping in my 98 TJ Wrangler. I'll be here a lot more throughout my conversion. My L33 came 100% complete from an 05 GMC Truck with a DBW throttlebody, tac pedal, and computer #12589463 but I'm skeptical on the electrical throttle system. My problem is that I also have a DBC throttlebody, harness, & computer #09354896 from an earlier Silverado (year unknown) 99-00? Can they be swapped out and the L33 perform correctly to FULL potential with an older computer vs the original? My engine is the hopped up version of the 5.3 with different heads and cam. Would I be downgrading on performance with a 99-00 normal 5.3 computer rather than my original 05 computer it came with from factory? I will never use cruise control either. My jeep will be a straight drive and used for moderate rock crawling.. Instant throttle respond is a must for safety on the steep trails. NO LAG and that's what drives me away from dbw. Plus I don't want to short out the pedal in a creek or smthn and it get stuck wide open or not at all.
You sound a person that reads on jeep forum about DBW. It's fine, use it.
11-12-2014 08:30 AM
blackwidow98
L33 swap. need computer help

The jeep forum isn't much help on the L33 I'm dropping in my 98 TJ Wrangler. I'll be here a lot more throughout my conversion. My L33 came 100% complete from an 05 GMC Truck with a DBW throttlebody, tac pedal, and computer #12589463 but I'm skeptical on the electrical throttle system. My problem is that I also have a DBC throttlebody, harness, & computer #09354896 from an earlier Silverado (year unknown) 99-00? Can they be swapped out and the L33 perform correctly to FULL potential with an older computer vs the original? My engine is the hopped up version of the 5.3 with different heads and cam. Would I be downgrading on performance with a 99-00 normal 5.3 computer rather than my original 05 computer it came with from factory? I will never use cruise control either. My jeep will be a straight drive and used for moderate rock crawling.. Instant throttle respond is a must for safety on the steep trails. NO LAG and that's what drives me away from dbw. Plus I don't want to short out the pedal in a creek or smthn and it get stuck wide open or not at all.
11-11-2014 07:36 PM
RebelRider
Quote:
Originally Posted by Twankie View Post
07 classic and all of the 07+ body style trucks had a much shorter outlet.

Also don't use a universal flex hose. Bend up a metal rod or coat hanger to mimic the shape of the hose you need and find one at the auto parts store
Perfect. Thanks
11-11-2014 07:15 PM
Twankie
Quote:
Originally Posted by RebelRider View Post
I'm getting towards the end of my 6.0 swap in my Toyota. I'm running all truck accessories on the front. My problem is, my upper waterpump outlet points almost straight forward. It is also higher than my upper radiator inlet. I would have to run a universal hose in an "S" to be able to hook it up. The radiator is very close to the motor, but I'd like to keep it up front. Any advise?
07 classic and all of the 07+ body style trucks had a much shorter outlet.

Also don't use a universal flex hose. Bend up a metal rod or coat hanger to mimic the shape of the hose you need and find one at the auto parts store
11-11-2014 04:23 PM
Gemner
Quote:
Originally Posted by RebelRider View Post
I'm getting towards the end of my 6.0 swap in my Toyota. I'm running all truck accessories on the front. My problem is, my upper waterpump outlet points almost straight forward. It is also higher than my upper radiator inlet. I would have to run a universal hose in an "S" to be able to hook it up. The radiator is very close to the motor, but I'd like to keep it up front. Any advise?
Then run a universal hose? Im running a universal hose, no issues, just make sure you get one that wont collapse when bent.
11-11-2014 08:09 AM
RebelRider
Waterpump

I'm getting towards the end of my 6.0 swap in my Toyota. I'm running all truck accessories on the front. My problem is, my upper waterpump outlet points almost straight forward. It is also higher than my upper radiator inlet. I would have to run a universal hose in an "S" to be able to hook it up. The radiator is very close to the motor, but I'd like to keep it up front. Any advise?
11-09-2014 04:20 PM
Gemner Yeah I don't think there are any OEM ones but of course eBay has something to work.
11-09-2014 01:32 PM
Why J? Dookey makes some nice 5.3L stickers.
11-09-2014 12:54 PM
cj7ole Quite a few choices, went with this one, $9 on E-Bay, thanks.

11-09-2014 10:10 AM
Bo185 The GTO's had chrome 6.0L numbers. As well as 5.7L.




Ebay has pretty much whatever badge you can want just search.
11-09-2014 09:48 AM
waynehartwig
Quote:
Originally Posted by cj7ole View Post
Does anyone take time to let the world know that you now have a 5.3 (or 6.0 or 6.2) in your ride? I have an old 4.3 Chevy badge on the rear of my CJ and am looking to upgrade, now that it has been a few years since the 5.3 swap. Is there an easy source for such a thing, short of going to a dealership and driving the parts counter guy nuts looking for a year and model that might have had such a badge? Let's see yours if you got 'em.
Me personally, no.

Dealership or Ebay?
11-09-2014 08:23 AM
aloharover
Quote:
Originally Posted by cj7ole View Post
Does anyone take time to let the world know that you now have a 5.3 (or 6.0 or 6.2) in your ride? I have an old 4.3 Chevy badge on the rear of my CJ and am looking to upgrade, now that it has been a few years since the 5.3 swap. Is there an easy source for such a thing, short of going to a dealership and driving the parts counter guy nuts looking for a year and model that might have had such a badge? Let's see yours if you got 'em.
Not sure the tech on this but have you checked a Junkyard?
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