DM993tt

Where is a good place to pick up a 5 Bar Fuel Pressure Regulator?

How difficult of a DIY is installing one of these?

Spartan

Not hard to install, you'll have to take the blower box out (i think) since the last time I installed mine the blower box was already off.

Lots of places to pick up bosch parts, ecs tuning usually has them in stock. Just make sure it says made in germany on it and not made in china. There have been a rash of the chinese made versions being advertised as the german ones

sfbanchs

fvd is where i bought mine iam sure kevin has one as well

TheOtherEric

Josh - did the ECS fpr work for you? I never installed mine but probably will this spring, so maybe you can confirm it'll fit.

Geoffrey

You'll want something called a Bosch Mini50 which is part number B 280 550 113

Spartan

The adjustable fpr from them works fine and they sell the bosch motorsport 5 bar fpr (made in germany) for the best price around from what i can find.

One can always pay double through fvd if that makes you feel better inside :/

DM993tt

ECS does not have the Bosch unit only the adjustable one.

THe Adj one works in the 993tt's? How do you adjust it??

Spartan

Hmm must be sold out they used to always have them. You want my old 5 bar fpr? Just pay for shipping and its yours. Replaced it with an adjustable when I went with the 60 lb injectors

There is an adjustment screw on the fpr and you can adjust it to fine tune the your afr's. You can only do this if you have a wideband installed as well as a fuel pressure testing guage though. No reason to go with an adjustable fpr unless you have those tools. With 60lb injectors my fpr is around 3.5-8 bar to get me around 11.8 (ish) afr's under full throttle. This is with the bosch 044 fuel pump as well

Q

Isn't that a little lean for a 993TT ??
I thought they needed to be kept quite rich, to keep the heat out of the heads - closer to 10.5:1 at WOT ??

TheOtherEric

Like Spartan, I'm aiming for around 11.5 to 12.0 on recommendation of my tuner. I seem to be averaging around 11.6 throughout the rev range at WOT.

Spartan

I agree. That is where Todd has it set but I would rather see it in the low 11's or high 10's under WOT. Just a matter of messing with the fpr but I'm going to do a couple more revisions on my file anyway once the weather gets better and the engine is actually in the car


Eric I'm glad your over here more

Basal Skull

I found it pretty hard to remove the old one... but came out after a lot of encouragement while trying hard not to put too much force on the fuel rail.

wagongotya

It's nearly impossible to replace the FPR with the motor in...my recommendation is to pull the motor. While you are "in there" you might as well rebuild the motor with rods, cams, mech. lifters, etc and throw a set of k24/18g's in for good measure. Those pesky fuel pressure regulators tend to go out during the long winter months so your timing just happens to be perfect

Spartan

lmao! Stop picking on the p-car guys matt

DM993tt

I know the while you're in there comment is laden with sarcasm, but is the first sentence accurate?