F40, I need a digital wastegate controller

The Apexi AVC-R http://www.apexi-usa.com/product_electronics_detail.asp?id=200&pageNum=1 is considered to be the best on the market and for a more simplified boost controller the Greddy Profec-B http://www.greddy.com/products/display/?Category=electronics&SubCategory=51 is one of the the most reliable and accurate aswell. I have alot of turbo experience and either one would be a good choice, I had a Profec B on my MR2T and it was great.

 

I've never heard that, but couldn't that be adjusted at the wastegate as well?

 

I have heard your car run and it seems to me you are running it on straight pipes (no cats, no mufflers)? Am I correct? And it has the original waste-gate still affixed?








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I would strongly recommend you consider the Turbosmart E-boost. These are extremely reliable and used in many drag and competition cars...

 

FYI, Greddy/Trust declared bankruptcy yesterday.

 

You have a PM good sir!

 

In the US only?

 

Adjusted, how? Its just a spring tension device.

 

I would either replace the stock wg with a HKS 'race' wg or a TIAL which I personaly think is higher quality. You should be able to buy various psi spring's for the wg as I had done with my TIAL wg. All that is moot because an EBC (electronic boost controller) will rock your turbo world. Not only can you set the max boost but you can set the 'gain', meaning how soon full boost is hit and how long it is held. Also with the Apexi you can adjust the max boost for each gear and the rpm in which it hit's, including the boost 'gain' in said gear.

There was no way I was going to trust my stock ecu boost setting on a $5K race built engine with a T66 turbo without having more control over the boost.

Just buy an Apexi and have it installed and dyno tuned by a reputable shop.

 

I can vouch for the Apexi AVCR, it's a good bit of kit The little computer screen also displays everything such as injector cycle duty, revs, speed, boost and so on.
It'd be a first seeing one on an F40 though!

 

williamh its my understanding the F40 wastegate is not mechanical; its controlled by the ecu, no? davidhelms rebuilt my wastegate and its really smooth. what turbos are you running, the original ones or the current 'enhanced' ones?

edit: does this happen only when engine temp is < 190? thats a common problem when the cars are running cool

 

The enhanced ones are the OEM replacements; ie if you order them from Ferrari they have a supercede part number. The biggest difference is they use bearings instead of bushings, and the blades have an edge on them which causes them to spool up earlier and faster. I have the part numbers around here somewhere, or if you call any Ferrari dealer they can tell you. Some people confuse them with LM turbos but they are not LM turbos. You could get them from Ferrari, but there are also the parts houses like Ricambi and Ferrparts as well.

With regards to your current problem, I had the exact same setup as you with no issues, so I wouldn't suspect it has anything to do with your exhaust config. The wastegate itself is a pretty simple device, just a spring and a diaphram that is controlled by the computer. The tension on the spring is controlled by adjusting nut on the outside, and its pretty critical that is correct and should not be adjusted from its factory setting. From what I have heard, a lot of cars has them (incorrectly) adjusted by dealers because owners were complaining with the same symptoms you describe, and the problem was simply that owners weren't allowing the cars to come up to temp (ie 210). I have to run cardboard in font of my radiator to keep the car up to temp when the weather is cool (regardless of what I do with my right foot )

 

Running "cardboard" in front of your radiator should not be necessary even in in full winter conditions, if the F40 is properly fettled, and is operating correctly.

 

not all of us are driving around with plugged up radiators joe

 

Agreed.