Wow my intercooled roush supercharger makes my truck so much faster now that the weather is cold. I get spinning tires thru first and second gears. wish I had performance like that in the summer.

 

I know what you are feelin, I was running 14.0's in the 1/4 in summer now I'm running 13.6's

 

yep cool air is great, that is why the lower you can get your IAT2's ,the better. make sure your not pegging ur maf....

 

x4

Hot Summer
1/4mi ET - 14.08sec
1/4mi MPH- 95.97mph

Cool Winter

It would be nice if the forum was like it was last year when there was quality information for owners talking about what has worked for them and what did not do well.

Now all we have are the same old help me design and build a turbo questions from people who can't even change their own oil.

The popular turbos are better than superchargers for the 04 up F150's debate with no (beside STS) turbo kits to compare with a supercharger kit.

 

To keep on topic, my truck is performing much better as well.

Drew, to your point, some of these guys installing superchargers/turbochargers better have a lot of money because I'm not sensing much common sense with some of these topics.

 

haha I agree^

 

big difference on mine. we hit -5c, not sure what that is in ferinheight (spelled right???) alotta fun driving to work

 

23 *F


It's still in the 70's here...should get down into the 50's next week though...

 

I for one have a little common sense. Enough to know that my stock bottom end will go sooner or later, but not enough to re-pulley when it cools down.

 

My intercooler is installed in front of the radiator so its already blocked for air but now that its colder out WOW what a burst of power.

 

I wish it would pick a temp and stay. I get off work at nights and it's 30* outside... I wake up and it's 75* outside. WTF! It's even freakin' my truck out.

Cold weather is great.

 

Let me see if I can summarize this correctly.

One of the problems I ran into and one of the issues I had to "negotiate" with Troyer was that my truck only has one IAT. Originally it was located in the intake in front of the TB and read ambient air temps. On the Allen kit, the IAT is installed deep in the manifold on the "engine side" of the supercharger. I installed a Scan Gauge II and I noticed that the IAT reads a consistent 35 degrees above ambient no matter if I am in boost or not. I made a lot of changes to the heat exchanger system and installed one of the JDM aftermarket, twice as wide, twice as much fluid heat exchangers with a cooling fan and all it did was help me reduce my temps under boost and improved my recovery time. My actual non-boost IAT temps stayed within 5 degrees as before the changes. I would suspect that non-boosted engines with the IAT located that deep in the intake would read about the same as mine.

The original truck program was backing out timing starting at 100 degrees. It was backing out 50% (I think) of the timing by the time it reached 150 degrees with significant timing being backed out at 125 degrees. With my normal non-boosted IAT's averaging over 120 degrees in the summer, it was like having half the boost. Then, as the heat went up under heavy acceleration, it got even worse.

My tune now does not start to back out timing until the IAT reads above 130 degrees; I would actually prefer a higher temp. Now it does not begin to go into an accelerated timing reduction until it reads above 150 degrees at the IAT. The IAT temps rarely hit 150 degrees even under prolonged boost periods.

Unfortunately, this was not corrected when I was on the dyno (at Troyer's) so I have no post changes dyno results. The changes came later. I can tell you the seat of the pants change was dramatic.
I would recommend anyone with a roots style blower to get a Scan Guage II and monitor the IAT temps in non-boost and boost conditions. You can then talk to your tuner to see where they start to back out timing.

I still have the truck but, with some personal problems and the price of gas, I have lost interest in increasing the trucks performance or even measuring the current output. I can burn rubber through the 1-2 shift even in the summer and it pulls my trailer like a SOB so that is enough for me. Besides, I bought a new GTI (can everyone say TURBO).

I hope this is understandable and I hope it helps.

 

OEM tune on the GTI?
I put an APR tune in my GTI and it's a huge difference.
See...the mods never end, they just jump from one vehicle to another

 

Jordan not Mike,
You've got mail.

 

I lose approximately 5/10's between 80° and 40°.

On Wednesday it was 23° out and the truck was on fire.