i did not want to hijack the other threads that are discussing this, so ...

i have started looking into helping my truck temps when towing. since i added the predator when i pull a long hill with it set on 40hp my temp gauge goes way up now, it never use to. i am confused about what is recommended, do i need the mouth piece, and or just the rubber that goes around the air box. what is the difference from the induction overhaul kit and the cold air intake i have read about on this sight and others.
thanks guys
craig

i am confused about what is recommended, do i need the mouth piece, and or just the rubber that goes around the air box. what is the difference from the induction overhaul kit and the cold air intake i have read about on this sight and others.
thanks guys
craig

Depends on how bad your truck is overheating & if there is another problem.

Rule out headgasket problem first. Then make sure your rad isn't covered in debris.

Do you monitor engine temps with a scanguage or something similar?

How bad is it overheating? Do you see 220? or do you see 240?
If you never get hotter then 220 I would suggest a cold air intake, a lbz mouth piece, a decent rad flush and cleaning.
If you see 240, you have a truck like mine and need to find Tx_Christopher and get him to fix you up with one of his Rad Mod V2's. Don't bother adding a bunch of other aftermarket stuff. This is the only proven solution to LLY overheating.

Flame on.

The Predator +40 hp tune is dumping more fuel into your engine... so it's not surprising you have higher ECT's when you're towing.

The LBZ Kodiak turbo mouthpiece will help... but not sure how much. It will get more air to the engine, especially when towing - and it'll give you some extra mileage to boot.

The TxC CAI will also lower your IAT's and give you more mileage too.

Both mods are highly recommended... but I'm not convinced they will eliminate your higher ECT's sufficiently. It depends on how heavy you tow, how often you tow heavy, the aerodynamic profile of what you tow, and what terrain. As stated previously, the V2 is the one and only complete cure for the overheating LLY... but not everyone needs one; if you weren't overheating before the Predator, you can likely take care of this with a couple mods.

I'd start cheap and go from there. The TxC CAI is $60 and takes 15 minutes to install; it should be done first. Next, do the LBZ Kodiak mouthpiece - no cutting required. That'll take you another $68-$135 (depending on where you can get one once the supply is freed up), and it takes 15-30 minutes to do. V2 is up over a grand and I have no idea how long it takes to install. But... Sneeze has it right; the V2 is the ticket.

Don't bother with the induction kit - the two things we've both mentioned above will do 99.99% of what the induction kit does for a whole lot less money.

Good luck!

thanks for the replies, i tow a 10,000lb 5th wheel about 8 times a year, so i will look into the mods you suggested. it was confusing when reading some of the posts about different things to do, some people being banned from this site, i did not have a clue where to start.
thanks again

craig

thanks for the replies, i tow a 10,000lb 5th wheel about 8 times a year, so i will look into the mods you suggested. it was confusing when reading some of the posts about different things to do, some people being banned from this site, i did not have a clue where to start.
thanks again

craig

Read this thread:

http://www.dieselplace.com/forum/showthread.php?t=258428

Craig. What are the conditions like when you are heating up? Hills, outside temp, speed? Do you hear the fan roaring, or is it quiet?

i have only noticed the heat up on hills with the 5th wheel in tow running about 65 mph @ about 85- 90 degrees. the fan only comes on when the temp goes above 210 or so..
the link randy suggested has alot of good info, but if i get the lbz kodiak mouthpiece and air box will i need to do the maf reflash?? or should i do the txcai and keep the lly air box and add the lbz kodiak mouthpiece and go from there?

craig

210 is nothing when towing heavy up hills. Thats when your fan should kick on and bring the temps back down to 190. I start getting worried when the temps climb past 220 and KEEP climbing on up to 240+.
But I really have to be towing heavy at some elevations like coming into Denver from the west at 10,000+ feet doing 65MPH. Crossing Donner's pass is another good one that will get it warm too.
Seems like boost over 17LBs when towing heavy up grades, will also create the hot situation also.

ok, so after reading the post randy suggested it seems to me that i need the txcai air box mod for an lly, and the kodiak lbz mouthpeice. does that sound correct, or should i wait for the mouthpeice that txcristopher is working on??
what do you guys think?
thanks for the help
craig

forgot to add will this all fit under the hood off a GMC??

someone said the hoods were different.
craig

Not a problem with fit, and Txc CAI is reasonable and well thought out addition. Just as most people have alluded to: 20 minutes and done! The mouthpiece fits in basically the same space.

Tom

i feel stupid asking this but what is the Txc CAI????

http://www.coolmyduramax.com/joomla/index.php?page=shop.browse&category_id=6&option=com_virtuemart&Itemid=30

TxChristopher (or TxC for short) is a vendor here. He sells an easy to install, inexpensive addition to your airbox (CAI-Cold Air Intake) to help get outside air into your intake, instead of the hot underhood air like it is when stock.

i feel stupid asking this but what is the Txc CAI????

Don't - the product, IMO, is one that needs re-emphasizing so long as a LLY exists, so anyone new's questioning what it is helps do just that.

BTW, as a newcomer I asked the same question, got an answer, ordered mine, installed it, so now I know. If you own a LLY, maybe you'll do the same.....:)

i feel stupid asking this but what is the Txc CAI????

Remember, there are very few actual stupid questions (I hate that "there are no stupid questions" - that's just not true, but there aren't all that many), but there are plenty of stupid answers.

Welcome to the new "not stupid" guy! :welcome:

We all had to learn - and most of us learned here and/or in the school of hard knocks. :rolleyes:

I went the coolmyduramax website and half the links are broken, and after sending an email to the link on the website I got a message back from the domain that the email account no longer exists.

I've been interested in the V2 Rad Mod and CAI products but can't seem to make contact with this person. It seems that TxC was a fairly well known from this forum, so if anyone knows how I can make contact with him to find out if he's still making these products I'd like to know!!

Thanks in advance to your responses!
Rod

http://www.dieselplace.com/forum/member.php?u=7751

He's in the process of selling his truck so he will be on here from time to time.

You can also look for him at thedieselspot.com

You can contact him here:

TxChristopher@tmail.com

He's hard to get ahold of, but he is alive and well.

reutz, can your Predator read real time data off the OBDII port. If so use it to watch the engine coolant temperature.
Mine will go to 108 C ( about 225 F) on the reader - not the dash gauge, in a hurry, them settle there when the fan locks fully. The odd time I will have to ease up on the power to keep the temperature there, but most times I stay with everyone else and keep the temps under control.
I guess it will be your call on how much you wish to spend over how often the temp is a real problem and what you need to do about it.

Check the date on reutz last post in this thread. ;) Hope he's got it figured out by now:D

my lly started overheating once i upgraded to a 13.5k+ toy hauler 5th wheel. after god aweful amounts of research and testing i feel confident i have the solution(s) to the lly overheating; all my info comes from info found in this site.

If you tow big, in elevation, in hot ambient temps, the only fix needed and the only one that actually works is the TxC RAD MOD v2 kit with fan. [big fat period]

If you're not towing too big, not in elevation, and not in hot air, you can probably get away with a couple of other mods. The first thing you have to do if not using the RAD MOD kit is a true, quality CAI. I have never used the TxC CAI but most everyone on this site says it works very well. I use the Banks CAI with superscoop and feel it is by far the most effective and advanced CAI on the market. when used with superscoop my intake air temps are normally the exact same temp as outside ambient temp as read by truck computer and on extreme hot days maybe only 10-15 degrees hotter. After the CAI I would work on the intercooler, exhaust, cut the CAT, and replace your turbo mouthpiece with the LBZ mouthpiece.

forgot to add...keeping your tranny cool will have a beneficial impact on your engine temps...the PPE trans cooler is amazing...my tranny temps are consistanly 30+ degrees cooler than stock...and besides helping keep the beast cool, it will extend the life of you allison.

crbonline - thanks for the info - you nailed it for me; my overheating issue began the day I bought a 30' fifth wheel. I have been running stock for the most part - no performance chips or exhaust mods. But now, not only did I have overheating issues with the engine, the tranny got hot on a few mountain passes. I live out the in pacific northwest so you can't exactly avoid the mountains... I will look into the PPE transmission cooler you mentioned. What can you tell me about this? I like mods I can do myself; and I'm not a mechanic.

Also, did you find the Rad Mod V2 easy to install? Did you install it yourself or have someone else do it?

Thanks in advance to your response!

i live on nor cal so i'm always heading over the donner summit which really causes the overheat. this forum is will produce endless amounts of info on the causes of the overheating...and it seems to be somewhat of a religous debate...but regardless, gm freakin blew it on the LLY...if you tow big, in steep grades, in elevation, in the summer, you're gonna have overheating issues.

both the PPE trans coolers (i got my from dmaxstore.com...great price and the owner is a real stand up guy) and the TxC RadModv2 kits are relatively easy installs. I'm not a mechanic but i fart around with stuff and i was able to install both at the same time in about 2 hours...probably would've taken less by my 2 yr old likes to hide my tools when i'm working.

perf mods do not cause overheating issues at all. it is a gm design flaw. if you want to avoid the perf mods and just want to kill the overheating problem, go with the rad mod kit and ppe trans cooler...you will almost never hear your aux fan engage again. both products are amazing and deliver on promises.

TXChristopher is a tough guy to get ahold of and if you email, he takes forever to respond but you can trust him and his product freakin rocks. essentially to order the rad mod kit you gotta send him a check or money order for like $1200, he'll cash it when he receives it and he'll send you a kit when it becomes available. he will most likley not respond to emails and you really won't hear any status until he ships your order...which can take some time (weeks maybe a month or so) because this is not a major production as you can imagine (not a whole lot of LLYs and of all of them, not all tow big)...if you ask me he is doing it as a favor to all of us that were screwed by GM. but if you think you're gonna want one, get him a check or money order ASAP...the seasons effect the manufacturing and shipping speed. each spring all the guys who just bought a used lly and start to tow big realize in early summer/late spring there is an overheating issue, they flock to this site, find the info and then everyone starts to send TxC orders and everyone wants it immediately. my suggestion is to send money asap, be patient, trust the guy, and be prepared to solve the problem once you get it installed. for the ppe cooler, you can just order from dmaxstore.com. i like my perf mods but i gotta say the best money ever spent was the rad mod v2 kit with fan combo and the ppe trans cooler...i will never again be the idiot sitting on the side of the road with his family, hounds, and trailer in 100+ degree weather waiting for my truck to cool down as all the dodges and fords roll on by laughing.

Agree w/ what's been said. Be patient w/ TXChristopher. Worth the wait. Did the CAI and V2 at the same time. Very good quality stuff. Did the AFE Blade Runner today. Almost looking forward to a 100 deg OAT day to tow my 5th wheel up I-80 in Parley's Canyon. Had the truck since new and last Summer I'd had it.......Pulled over with the hood up trying to cool her down from 240. That'll be the last time!!

Yes it will , I didnt have an overheater, bu I tow heavy too and its all what its cracked up to be with the txc cai kit and the kodiak mp, I too run a 40 hp box tuner and the truck is day and night difference, it ran great stock, but my mileage went up some and the mods only cost 60 dollars for the intake kit, 87 for the kodiak mp and bought a used tuner box for 125 dollars, not alot of money and the gains and performance are really noticeable.