Ok so ive been running just the cx heat exchanger for about 5 months and decided since i got the ott stage 1 on the way that maybe more cooling would be a great idea... so im using both the filler neck runs into the stock then out to the cx then into the pump. will this be ok or would it have been best just to use the cx??? by the way does anyone know josh from ott becausse my cpu messed up and its shows me buying the ott stage 1 3x's i dont need 3 and i need my 1400 dollars.

 

isnt josh fast98 or something?

 

yes, it will be fine. it is actually prefered that you run the cx inline with the factory h/e

yes again

 

talk to Josh he will resolve your issues, and go to Option B dont waste time with the silly stock T filler it really is junque....good luck

 

I'm sure if you paid 3 Times you'll get a prompt refund! :P They are good people.

 

Your all good brandon, only one order went through

 

I am running the OTT heat exchanger and the stock one!!! love it too

 

make him pay!!!!! just kidding i have the old design h/e from OTT and I WUV it!!!

 

I hope this doesn't turn into the epic 1 h/e vs 2 lol...by the way, 1 h/e FTW

 

Why?

More coolant, better cooling..

Didnt you just have a problem with installing them inline?

 

....I never tried to install them inline...Hungryhip did a test and found that cooling was better with just one, I don't think there is much of a difference because the stock one does not hold that much anyways.

 

I was just messin man haha...

Really? yea i guess it does seem really small.. Ill have to look up those tests.

 

It still runs through both of them so it gets cooled twice.....

 

Thats what id think.. and i mean.. i know its not that much more coolant, but it is more.. i just dont see how it would work out that way..

i guess im gonna go do some el-searcho

 

The reason you have better cooling with one over two is location. Look at where the stock h/e is, true you will have more coolant no doubt, but that coolant will be hotter in the stock location becuase of lack of airflow and its relation to operating temps. So your just having that second h/e cool down coolant that would not have been that hot in the first place. Also if you run one that is large enough it would make up for the capacity of two

 

Thank you. I knew there was a rason behind it. lol

 

So would you recommend running a single H/E or inline with the new one you guys are producing?

 

Either way will work, some people perfer to leave it in for a little easier of a install. I would say if you could though take it out

 

Here's my story:

I bought the cx racing H/E from OTTP last summer. When I hooked it up initially, I ran it inline with my stock H/E. I did not see a drastic drop in temps so I capped the stock H/E and ran the cx racing H/E alone and I saw slightly cooler temps in that configuration.

Also note - I was very happy with the service and quality of product that I got from OTTP. Thanks again!

 

Thanks for posting

 

damnit and i just installed the stock one back up because i bought the new ott stage 1 and was figuring that it would help with cooling. i still believe it would be better.....more coolant more fins to disipate heat and yea the stock one might be in a not so good location but if gm engineered it to be there for cooling.. then obviously its cooling... then once it runs out the stock and into the front mount it should get even cooler. just my 2 cents.. but im still a noob.

 

see I don't know why you would want to have two h/e what are you going to cool coolant twice or something, now I see what you could be saying about more coolant but A. isn't cx h/e bigger then stock if not maybe more efficient in flow. B. having more coolant what’s the point the car is only going to use what it needs why have even more.

 

What he said. ^

old thread but im searching around for the rad coolant capacity on lsj

 

I'm running the CX racing and the stock HE also..

 

Think about it like this. Take a pot and put 2 cups of water in it and set it on the stove on high. Then take another pot and put 8 cups of water in it and set it on high. Tell me which boils first? It goes back to the basics man, it takes longer to heat up more liquid then less. Running a 2nd heat exchanger or a bigger heat exchanger gives us more coolant, the more coolant the less it heats up, the less it heats up the lower our iat2's will be. Another way to look at it is how much of the coolant is used before it is being circulated back through, meaning if you only had say half of your intercooler system filled, your iat2's would be drastically higher because you are circulating that fluid through many many times. It's really late, but hopefully some of my logic makes sense to you guys =D.