After doing some logging today during a WOT 2-3gear pull, I noticed that my IAT2's get rather high, around 158* but never over 160*, even after multiple runs. They will cool down rather quickly after I cruise around again, and go to around 110 or so, which is ~35 above IAT1. ("Ambient" also seems rather high, despite my "cold-air-intake" - around 75-80 when it is around 50* outside) The fact that they are cooling down so quickly shows me my pump is working with my dual-pass/opt B and heat exchanger.

What are you guys seeing this time of year for IAT1 vs. IAT2?

BTW, my engine mods are as follows:

K&N Typhoon CAI
LS4 TB
2.8" Smoothflow pulley
42.5 lb/hr GM Stage 2 Injectors
GM Dual-pass intercooler endplate with Option B
CX Racing dual-pass heat exchanger (in line with the stock heat exchanger)
ZZP Mid-length Header/full 3" cat-less downpipe/full 3" exhaust

bump

 

Weird. I've got the OTTP h/e. I don't get much over 130-140 (when my water pump works...lol)

 

You guys really shouldn't go over 140. If you do I'd get more cooling

 

I'm trying not to, that's why the thread is here... lol

I should have adequate cooling for a 2.8 pulley...

 

My IAT1/IAT2 difference when crusing is ~20*. And on a 60* day after back-to-back-to-back pulls, my IAT2's never see over 120-130*.
My mods are similar to yours:
K&N Typhoon CAI
2.9 pulley
42lb injectors
dual pass
Big CX HE (stock one removed)
Coolingmist Meth kit w/ 3gph nozzle
Full Exhaust
TTP tune
Hope this helps ya.

 

maybe that meth kit's helping ya... lol

thanks

 

2.75 ring on a tvs
130 peak then flattens out
cobra h/e
7gph meth nozzle.

check for air in the system. make the pump run with the key on and if you hear a gurgling sound, you have air in the system

 

im starting to wonder if my pump is bad, when i turn the key forward i hear nothing but if i jumper the pump it starts going

 

I think ur temps are a little high.... cruising i am at about 105 to 115 usually... and at WOT i usually dont pass the 140 mark...

 

get the handle off a jack or a long wrench, you can reach the pump from up top, just give her a tap and it should turn on.

Me and Brian can take a look at it when we get to the track. We are having problems with it too.

 

My IAT2 when cruising is about 15-20 degrees higher than ambient, this was with my old CA heat exchanger, ran only water and water wetter in for the summer (no Dexcool) on some 2-3 gear pulls it never used to go above 130 with a 5gph meth nozzle and the h/e

 

You never set your ERT to 0. Atleast the last time I saw your tune you didnt. Yours won't like that unless the car is running.


Make sure the pump is working first. Ive ran into 3 cars so far, 1 is mine, that the pump just stopped. I beat some sense into mine, hasn't shut of since.

 

my ERT is zero

 

If its 0 then its key on. It may be taking a **** if it isn't on when you have the key on.

 

Well, my pump is working. I have it set to 0 on ert and the iats drop as soon as I'm done wot-ing. Idk

 

On my 06 LSJ (2.7, Cobra H/E, Meth, 3" exhaust...) at WOT would see 119-125*

On the new 09 LNF (tune only) at WOT it's like 93-96*

 

i love nitrous. lol. 90* day at the track. IAT2's were 136* pulling up in staging lanes cause the car was idling for awhile. by the end of the 1/4 mile my IAT2's were 115*

 

And still slow... wuv you

 

did you run 12's bitch? thats what i thought. lol. :dancingpickle:

 

Not yet... I will by the time summer is up!