Hey, so a friend of mine is trading me his stocked ported/wrapped headers/aftermarket uppipe for my stock header/uppipe assembly. It's a good deal, so how can I say no?

Now here's the issue, i'm removing the header/uppipe right now...and damn, there's a ton of stuff that needs to come off! So i'm waiting for the pb plaster to kick in right now typing this. So didn't know I have to take off the downpipe to. Now here's the issue i'm having, I have a VF48 sitting on my desk waiting to go into my car. All i'm waiting on is my RA tranny to get built so I can get it all tuned at once. I have an AP v2, but no map for a vf48. Since I already have everything disassembled, it would make sense to drop in the new turbo while i'm at it, right? But I have no map to run the vf48. I hear it's similar to a vf39 but don't want to risk anything with the wrong map, and the tranny could be ready anywhere from next week to a month still. IDK.

Any thoughts on if I should just go ahead and put the turbo in while everything is apart? If so, what kinda map can I run from Cobb? It would be great if one of the shops could chime in. I'll probably call someone next.

TIA!

 

Well it depends, you can run the vf48 but stay off boost and drive the car like it's on limp mode and you should be OK. Now, if you're going to romp on it that's a different story. So it's up to you. You could also get a base map from your preferred tuner as well.

Ron

 

Ya, there's no way i'd romp around on the wrong map. I can limp it around. If it's not for too long, I guess I can limp around on the VF43 map.

How can a tuner get me a map? Is it possible to get a basic map for the AP, say via email?

 

Tuning on the stock tranny vs the RA trans shouldn't be any different should it?? It's only different ratios, it doesn't have anything to do with engine performance. Am I wrong?? With the RA trans you'd be going through the same power band as with the stock tranny, it would just go through it faster because the closer ratios..

 

Yes via email. If you can limp around town then you should be ok.

Regards,

Ron

 

Well since i'll be in the bay all weekend, the car will just sit in pieces in the garage and will give me time to find something. I have till sunday to figure out if its gonna go in or not.

That's what I originally thought, but Paul @ DB said I should tune when the tranny is in. I'm guessing it's for fine tuning. I also have a friend who blew his block running a RA tranny-based map on a standard tranny. IDK if they were related, but I don't want to find out on my car.

 

You will need a tune for those changes. Taking account due to different load and etc. due to the change of ratio. You can definitely blow up your car with different gear ratios if you're not tuned for it.

Ron

 

Yeah I hear you..Still don't know why it would matter though, you're tuning the engine and it's power band/rpm range, not how the power is transfered to the ground. But I guess I can understand how every little thing can effect the tuning process.

 

word. Guess I'm going to blow my engine soon lol...

 

[QUOTE=snowflow;2959293]Well since i'll be in the bay all weekend, the car will just sit in pieces in the garage and will give me time to find something. I have till sunday to figure out if its gonna go in or not.

Honestly having gone through 20 different turbo upgrades I say your good to go, just don't get too boost happy. As long as the original tune to begin with is safe and no fuel mods added(injectors,fpr, and etc. still the same) from original map then your ok.

Regards,

Ron

 

Do it now.

 

Don't say that. Log your car and see where you're at.

Regards,

Ron

 

Will do

Thead jack warning: Hey Ron you ever find that lost Koyo of yours?

 

Yes logging is your best friend. Negatorio, just can't find the darn thing and it's not small either.

Ron