What's new
By:
TurboTransAm.com

Register today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Pitbull chip users,past and present

WS6

WS6

Stay thirsty my friends
I know,I know..don't boost with this chip. But before I jump into another quirk I found I wanted to know if this problem is programmed into the pitbull chips.

This TTA runs both cooling fans all the time. From start up till shut down.Not when the key is just "on" but running only. I have found a jumper wire soldered in the harness between the primary and secondary fan relays and before I remove it I was just wondering if this was part of using a pitbull chip. And that since the secondary fan relay is ECM controlled I thought maybe someone jumpered the secondary relay to energize the primary relay using the chip to run both fans all the time?

FWIW, I have a TT chip and 50lb's sitting on the shelf to be installed so I won't be using the pitbull chip. But I want to wait to install till the weather is better and I can tune it, rather than throwing parts at it in the garage without testing anything I've done.

I also just bought a TE44 turbo.



....

....
 
Hey, good for you! The TE44 is a GREAT turbo! tried and true, spools great with the stock convertor. It'll pick your car up for sure.
Pit Bull chips are terrible I had one in 1991, I've never heard such terrible knock since I used that chip, took out that night. Did someone make a switch to override the ECM and turn on the fan on as they wanted or was it dialed in to the ecm, I may have misunderstood? My bro made a switch to turn his fan on manually on his GTP and I'm gonna have him do it mine when he gets time.
 
I do not think it had anything to do w/ the ATR chip. Just a modification the last owner probably did.


The te-44 is a great street turbo. That is the one I would have bought too. Although I really really like the new turbo's from Precision w/ the boost tech. The new 6157 BB you can use w/ stock converter at Full Throttle Speed. Really reasonable price for a new BB turbo. These were close to the same price as Precisions last model turbo's.

Off topic:
haha. I tested the Pitbull chip out then I bought the TTA. 26 degrees timing is nutz. I was getting 24 degrees knock at 18lb. w/ stock injectors....Made about 3 runs and out came that chip. You will have to run c-16 or some sort of race gas w/ that monster. Yeah, put it on your work bench and smash it w/ a hammer. I will do the same w/ my volt booster.lol
 
There's no switch that I've found that runs both fans. But the schematic shows that the primary fan is "stand alone" in operation,triggered by the A/C pressure switch and or the coolant temp sensor(not the gauge one).The secondary fan is triggered via the ECM which looks for excessive temp or A/C request in closed loop. Also let's not forget the 10 minute fan relay timer which runs both fans for 10 minutes after shut down if temps exceed 260(If I remember) and is latched "on" through the secondary relay, which is ECM controlled.
I was just wondering if these fans are running together, all the time.Is something that the pitbull chip is programmed to do and that the old owner jumpered a ground from the secondary relay to the primary relay so that when(or if) the pitbull chip commands(grounds) the secondary relay it energizes the primary fan too.

The whole thing is horky and seems unnecessary right now. Basically it appears that the primary relay is a slave to the secondary relay and it should be the other way around. Which I think is what you want to do, and I agree with that. But the way mine is right now the car struggles to get to operating temp at 140-160. It also seems like a down side would also be an unecessary amperage draw.


....
 
There's a website out there somwhere from a TTA owner who has a couple pages of mods he has done with very detailed description. One of the mods was a homemade harness to engage the secondary fan earlier than normal.
I spent an hour looking for it again with no luck and I don't suppose any of you guys have that saved in your bookmarks?? I thought maybe I linked from it here but I can't find it and it's been a couple months or more since I was reading it. I should have saved it damnit!



...
 
So, I found the problem with the 2 fans running all the time. First the jumper wire that was installed shut down the primary fan once removed and after hours of harness/sensor/relay checking it was indeed the pitbull chip engaging the secondary fan.

That's a small load off my mind, I was suspecting a hidden switch somewhere under the dash, but alas not so.

One oddity though... the factory supplement manual schematic is drawn wrong. Right down to the incorrect location of the diode to which fan is which.Even the location of which side is the primary fan is backwards and there is NO way the harness could have been swapped to either relay because of the length of the harness. What I mean is that my primary relay is up against the fender and my secondary is with the time delay relay and nearest the radiator. Even the Blk/pink and Blk/red wires are opposite on the fans themselves. Counter to what the supplement manual reads.

Very odd...but it functions normally now.




...
 
You must log in or register to reply here.
Back
Top