tabbruzz

that sucks...well, I was kinda of expecting that I guess...thanks for the info...

Toys4Life C5

Are you using a Cobalt SS MAP sensor with your Speed Density tune? If so, did you swap it in place of your stock one which I believe is tucked on the back of the intake manifold towards the firewall?

neutron82

I had a cobalt sensor in mine for awhile... you will have to shave one side down to allow the tab on the intake to hold it but other than that it fits like stock

aaronc7

Yes, I use the cobalt SS sensor. Here is part number and pic showing the tabs. I just used a little sandpaper wheel on a dremel to file it down. It feels a little 'loose' in there (stock one probably was too). But for our relatively low boost levels I bet it's OK. I might do a boost leak test one day.

Toys4Life C5

From the limited research I have done, sounds kind of tricky to get even a smaller hand back there to remove the old one and install the new one without removing the intake mainfold. Do you concur?

neutron82

it's possible to do with the intake on, I've done it, but it would be easier if you already have the intake off... not sure I would remove it just for that reason though

aaronc7

I did it, it was a pain to remove... I recommend keeping the wiring attached to the sensor when you remove it, I did not and when it broke loose, it was 'lost' in no-man's land for awhile but I was finally able to fish it out.

Putting it back in, I put a little lube on the tip so to speak, and it will take a little fiddling around, but it wasn't too bad. Worst thing for me was not being able to confirm 100% that it was fully seated because you can't actually see it. I will definitely double check the next time the intake comes off..but I'm in no rush.

(basically concur with neutron)

tabbruzz

Does the new sensor work as normal if I just do the swap in case I decide to go speed density...rather have it in there so o have choices

grassblaster

I broke the plastic piece on the bottom of the intercooler.
what material is that .ade out of?
Or where can I buy that plastic piece?

tabbruzz

looks to be some type of abs plastic. Can't you just order a new one from a&a?

aaronc7

It works as normal as long as you change a couple settings in the tune to account for the new sensor. If you swap without changing the tune, it won't work right because it will be reporting false manifold pressure information.

tabbruzz

ok, figures....any idea on what the tune settings are? If you have ti change the OS setting which one is it? 2 bar?

aaronc7

The tables have what they call a "scaler" and "offset" value for calibrating the MAP. Stock is ~ 95/10. 2 bar settings are 200/8, but I've also seen 195/10 used...both will work fine.

You can run SD on stock OS technically, by failing the MAF, but it will default to low octane table and might be a few other small limitations. The custom OS avoids those issues and opens up VE/timing tables in the 100+ kPa range.

I use efilive, but yes it's basically just the "2 bar" OS, which also has some extra nice functionality intended for SD tune. But on EFIlive at least there is nothing holding you back from running a custom 2 bar OS and keeping the MAF too

tabbruzz

ok, perfect...I will take a look..thank you

Toys4Life C5

Just don't get into any boost with the stock OS and 1 bar in S-D mode. That would be bad.

tabbruzz

yes, I dont plan on getting into any boost until it hits the dyno and gets tuned...i may just buy a map sensor and bring it to the tuners..

grassblaster

I looked a while ago I didnt see it.

Toys4Life C5

Just call, josh or andy will hook you up.

grassblaster

I have a laser cutter at work.
i'll have to call them and see what they say. I'll need that extra air grab for sure !!! lol

tabbruzz

guys, I see racetronix now carries silicon couplers. I wonder if any of their sizes would work...