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ATT, hood IC or GL4 ?

TMHark

TMHark

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Location
Hudson, NY
Only have money for 1

Truck runs AWESOME when cool, with TM, boost fooler etc. 14lbs max boost. Stock ECM, no optic bump but timed at ~1.5

BUT, towing during summer, power is good for only a couple hard pulls til everything heats up and loses power (and/or EGTs start climbing)

"Hanging IC" is out of the question due to plow frame. So I'd have to do a Frankenstein hood scoop style ATA IC

Tried ATW IC and had too much trouble with leaks, weak water pumps etc

Tried generic WMI and didn't care for results (plus we have hard water that clogs jets) and I refuse to buy water!


Soo...

Which one will give most output AND RELIABILITY for the $$ outlay??

A Team Turbo ($800) GM-8 turbo is only original piece left of drivetrain

Heath GL4 ($650 (plus core?))

ATA Hood mount ($200 plus hoodscoop, etc so maybe $400) and ruin resale value of truck. Like it has any anyway

So what do you guys think is best??
 
I would say turbo. But, I have a mechanical injected truck so, I am a little bias.

Do you have gauges?
 
Rads are clean (did that at engine swap time)

Coolant temp seems just fine. It doesn't break 180 degrees empty (or even light towing). During summer with the boat behind me, she'll eventually climb to the point where the the Duramax fan kicks in, and immediately drops 25 degrees! So everyhting seems OK in that dept
 
Turbo all the way!!! Ur having EGT issues, everyone who has bought one is real happy with the results from lower IAT's and EGTs. But i also heard somewhere that having a chipped truck (or reflash) will benefit more from the ATT? Is that true? I was going to do a ATA, but really up here is is pretty cool all the time, so the difference in air temp wont be worth it for me.
 
ATT. No question about it. Pulling a load you'll see 100 degrees lower IAT easy. 50 degrees lower on the freeway running empty. I ran stock PCM for a couple thousand miles empty and pulling. Get the GLE next. Forget the IC.
 
Turbo then flash, is tough one as both add so much to the 6.5, I'm leaning toward the ATT at this juncture;

ATT works well with stock program, but really comes alive with reflash.

Your core is refunded IIRC if you "sell"/return your old PCM back to Heath still worth a discussion with Bill or someone from his team to help you decide.

Sounds like you may have some generic cooling issues, dirty rad/condenser, maybe fan clutch, these "summer issues" drive one to treat symptoms with aftermarket goodies, that don't "cure" the real issue and lead to dissapointment, diagnose the o/h issues 1st, as you should not be overheating unless you have the plow itself blocking airflow in summer and not just the plow frame on the truck.
 
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Even though you have the updated cooling system, make sure you are running OEM (acdelco) T-stats, as that can make a world of difference.

Ive been contemplating the turbo or reflash decision myself so thanks for asking the question!
 
Too bad Scruffdog never made it over. He did a very cool top mount I/C. I had wanted to do it for the longest time. I had wondered how it would work with the ATT since the hanging ones from what I read caused a lag.
 
Maybe I'm not as sensitive, but I never noticed any lag after installing my intercooler. We just installed one a 1996 powerstroke, and he never noticed any lag, and his pipes are longer than mine. But I do know my IAT's dropped over a 100 degrees on a 100 degree day pulling 9000 lbs.
 
Acesneights1 said:
Too bad Scruffdog never made it over. He did a very cool top mount I/C. I had wanted to do it for the longest time. I had wondered how it would work with the ATT since the hanging ones from what I read caused a lag.
Click to expand...

Not to be jumping on the ATT pulpit yet again, feel the need to clarify misconceptions read into earlier posts.

I deleted IC, any IC whether it be ATA-WTA regardless where it mounts is going to impede flow to the engine to turbo, (not enough to write home about, but a difference) I deleted it completely after running with & without as the ATT from data off my scanner shows it really does not need any post compression cooling.

I long ago would have chosen WMI over ATA with my GM-8 but I tow big and the thought of carrying water to keep things cool with full time WMI spray when towing big would be a hassle, so I opted for the ATA IC with unlimited cooling media & simplicity no pumps/plumbing or secondary heat exchanger to cool the water after it cools the air charge.

Having run both IC'd & non IC'd; I now prefer the crisper acceleration non IC vs IC, but not that the IC was too much lag to be dealt with.

With the IC driveability was not compromised at all, but since the ATT does not really get into high boost levels a IC is not needed for most vehicles/driving situations currently neither my truck nor my burb have any cooling, but WMI will eventually go on the truck.

Those that do tow big may need some post compression cooling on long grade, and this is where the occasional squirt of WMI will be beneficial.
 
OK, guess my memory ain't what it used to be. Now I know how Jim feels:D

Leo
 
That's what I'm sayin. I remember you reporting some lag with the I/C but yours was a hanging ATA. I wonder how a scruff dog setup would work with it.
 
probably very similar, any time you restrict from point A to B by putting a cross flow device in the way it isn't going to be same as the direct path, now difference may be the IC design my ATA air in center filling core, and back out the center same side of the core http://myweb.cableone.net/tbogemirep/ adding to lag, maybe a less restrictive IC would do better, but goes against logic when we try to do things to improve flow, better flowing air filters, open exhausts, less restrictive turbos, that we would add a restriction to flow like an IC. Unless the trade off is a benefit less flow for lower charge air temps, now I think you can do both with ATT & WMI & not need the IC restriction.
 
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