Stillen SC A2W Plenum Temps
 

We all know too well that one of the short falls of the Stillen SC kit is the location of the MAF's, and with some of the temps that swiss370z has are scary.

Anyway TT was never really an option as there are issues with the LHD fittings, plus I have an A/T and is stupidly expensive to have a Bulletproof transmission shipped. So Stillen it is.

Ive spoke to my tunner, who is aware of the short falls and we decided that a temp gauge in the plenum after the cooler would be a good safety feature.

The SC is now part installed and you can see from the attached image the temp gauge is located at the rear (cosmetically better and shouldn't effect readings) and should give better temp readings and can read by EcuTek and I can keep an eye on it. Will be a good thing on track days I think.

I'll post more info and actual readings when the build is finished and the tuning the car.

Very interested to see your findings!

Ecutek can pull timing based on an additional temp sensor? Very cool.

I am very excited about the data :tup::tup::tup::tup:

In for results!

Nice. Where does it get spliced into?

So is this a way to monitor temps or can the ecu actually adjust timing from the sensor?

The idea is to provide this information to the ecu and use accordingly. Won't know exactly what will happen till he starts to tune it at the end of next week.

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I think if you take your IAT temp signal wire out of both mafs sensors and hook them up to that sensor it could work.

I think that's what was the general idea

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Sub'd

Subd


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IN for this! :)

How much boost are you running? There will be a big difference from 8psi vs. 11psi or so.

I'm still in the build process but I'm guessing it will be around 9 as all I have is the pulley upgrade due to known issued.

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Depending on ur climate, location and whether ur on stock cats or not u may only boost at 8psi with the pulley upgrade...I had to get the pulley upgrade due to these issues....the standard pulley was only maxing boost at 7.6psi. ....Stillen had to give me the upgraded pulley which put me at 8.6psi

In in the UK so foresee no issue with climate, well maybe flooding but no altitude issues. Were also on 98 octane fuel which is a bonus as this is less prone to detonation.

I spoke to the tuner this morning just to get my head straight and it is the intention to use the sensor in the plenum to feed the ECU with actual air temp.

^^^^^^ nice......Wish we had 98 at the pump....that would be so awesome....I'd even settle for 93...the highest grade we have at the pump here is 91. Race gas is @ 109 but it's really expensive.....5 gallons of race fuel is $120 (US $ ).

Looking forward to your results....

Is the rating the same? I can't believe they would sell that expensive gas at the pump. It would cost 30% more here if it were true 98.

We have something even better than 98 its called E85 and 5 gallons is about $7. :happydance:

Isn't that 98 RON? That comes out to about 94 the way we measure it here in the US. Still great, but not quite as impressive as it seems at first.

:iagree:

Research Octane Number (RON) is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.

Motor Octane Number (MON) is determined at 900 rpm engine speed instead of the 600 rpm for RON. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern pump gasoline will be about 8 to 12 octane lower than the RON, but there is no direct link between RON and MON.

A number of countries, including the US, use an average of the RON and MON, which is called the Anti-Knock Index (AKI).

Your right it is around the 93–94 (AKI) and the E85 you guys have is 94-96 (AKI), although looking at the tables its comparative with your premium/super stuff.

We did have a race 102 (98-98 AKI) but that was way to expensive. Current fuel prices here work out to be $6.50 per gallon

Quick read from a website:

Straight ethanol has a race-gas-style octane rating of 115. Mixed with 15 percent 87-octane pump gas, E85 lowers this to between 103 and 105 and generally sells for less than 87-octane gasoline. You read that right. We're talking the equivalent of 105-octane race gas for the price of moose-piss pump gas.

While there is a 27 percent reduction in heat, ethanol's strong octane rating allows the use of a higher static compression ratio to take advantage of that resistance to detonation. This means if you were to run E85 in an 11:1 or 12:1 compression engine, E85's higher octane would prevent detonation, which would allow you to run this higher compression ratio and take more advantage of the reduced Btu heat output by squeezing the existing air and fuel a little harder to make more power.

Any update on the intake temps, post-aftercooler?

Not yet. Been waiting. For some other parts, which are in now there. Next week.

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Please hold us up to date!

My experience I can only post the end of April! :ugh2:

Don't worry. I'll post when I have the info.

He has completed the re-circ pipe for the dump valve though.

Attachment 111962
Attachment 111963

And putting 2 fans behind the frozen boost rad to move air when stationary in traffic, which happens a lot in the UK

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Whats the story behind this dump pipe?

Allowing the air to cool more before its back into the blower??

Exactly. What's going on here?

That's not the intention. He said why he'd do it but I can't remember the exact reason. What I can remember is he said something about when the car isn't under load and the revs are say 3000rpm there is still lots off boost that's not needed (I understand this) which can cause some weird behaviour (can't remember this bit). But this is how he's fixed it to run smoother.

Got to be recirculating.

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Why not use the Stillen BPV that came with it? It does the same thing.


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But the stock system already does this.

There is a reason why, but I forget. I will ask him.


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What BPV is on there now?

The reason for the recirculating dv is to smooth the engine when cruising on the highway, since you can get a shuffling due to the dv venting air that has already been "read" by the afm

I don't see why you needed that, I don't know of any cars that had a problem cruising down the highway. On the highway the car is operating on vacuum and the BPV recirculates the air post MAF so it's still metered air, am I missing something?


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Yes, that is what it does. Op already was set up this exact same way, just a lot more simple.

It is the same as the standard system but we have found that with the larger pulley upgrade the supplied system cant flow sufficiently which causes this shuffle at low loads

In other words it is the same as the Stillen system , only bigger

Ok. That makes sense. Another reason to go A2A and dump to atmosphere. :tup:

In the OP ' S case could he opt to just get a BOV?