Let's say you had a swimming pool with cold water in it....then a firehose to the IC pump, then another firehose to the intake of the intercooler.... then out of the IC...then dumped on the ground. In this case, a bigger pump would help a lot. You want high water flow volume through the IC.
Here's the problem, when the hot water leaves the IC, it flows in the top of the De-gas jug, then out the bottom of the de-gas jug...then into the IC pump, then into the bottom of the HE, comes out the top of the HE....and back to the intake of the IC, completing the loop.
The IC extracts the heat...and the HE dumps the extracted heat. Ideally you want high flow rate through the IC, but much slower through the HE. Reason is, when the hot water sits in the HE longer, more heat is extracted from the HE. Problem is... it's all one big loop. With higher flow rates, it's not in the HE long enough. With slower flow rates, it's not going through the IC fast enough.
The only fix is a bigger HE. With a bigger HE, more heat can be extracted for a given flow rate. The HE from the 2014 GT-500 is massive vs the puny HE in the Edelbrock. The IC pump from the 2014 GT-500 flows double the volume vs the oem pumps used by edelbrock, roush, etc. The IC pump from the 2015 GT-500 can use the same fuse position and fuse size as the smaller pump.
At 15" tall and 3" thick, (forget the width) the bigger 2014 GT-500 HE does the job.... good enough that the mating higher capacity pump can be used to great effect.
I use a CDC front chin spoiler on my 2010-GT with small Roush M-90 blower...that alone puts more air through the lower grille. The Roush HE is 18" tall, and full width, but only 3/4" thick. It get hit by air from both the upper and lower grille. In the case of the 2010 GT, the oem upper grille is a full 80% blocked off ! My fix for that was the 7 bar grille. (which also deletes the oem upper foglamps). Ok, now a second benefit of the 7 bar upper grille...it eliminates the TWO x 90 degree bends from oem upper front grille to intake of the 'snorkel' that feeds the oem airbox. Now I can see the intake of the 'snorkel'. Air screams right in the upper grille, hitting the top portion of the Roush HE. The entire eng bay now runs cooler. IAT's are a non issue The problem with the mustang is..... the front bumper blocks a ton of air. All you have is the upper + lower grilles.
The 05-09 cars get the 9 bar upper grille....if oem upper grille is replaced.
The issue with the oem Edelbrock setup is an.....'easy' fix. Even a bigger HE and stock IC pump would improve things by a huge amount.
