You could run it into the cabin but that is considered very dangerous for obvious reasons lol. Wait i assume you mean mechanical...if its electronic your good to go!

I am familiar with what Rob is working on to some extent. Also, i heard about Bulldoggers fix but what pulley is he running?

I have a HO walbro 255 that many 4cyl guys commonly make 500+whp with. Now without knowing the flow rate of both i cant say this for sure but i am assuming that the sl55 does not out the walbro. However, even if it does keep in mind it is the factory fpr/filter that will divert any extra fuel pressure you add back into the tank! This is why i think you need a fp gauge, and why i also dont see how Buldogger was able to "fix" his issue(thats also why i asked what pulley hes running). When i was pushing 25psi on the 185 my afr's were 20+ and the only thing that came close was my return style setup, which wasnt a viable fix for other reasons

Here is another fun fact kinda related...our boost is not the same in all gears. In cold weather my little code 3 pulley makes 16psi in 2nd. 18 in 3rd. and 19.5 psi in 4th!!!

 

can i take this in a different direction? at one time the c3 intercooler was thought to be the answer to high iats as the oem doesnt flow very well.
would it be possible to remove the oem i/c and send iot to a radiator shop and have the guts reworked with bigger tubes and more fins? basiclly make better use of the space inside the intercooler? i know of a shop in indy that builds custom radiators and most likely could rebuild the i/c if provided one.
waldig your the resident pro at cooling what do you think?

 

It is not additional pressure that you need it is volume. As the car approaches red line the volume of fuel from the factory pump drops off to around 45- 50 gal/hr this allows the rail to start to empty. The SL55 pump works under the same pressure as ours but can supply 95 gal/hr @ idle and 70-75 gal/hr at redline this way the rails don't start to empty. The SL-55 cars run 8 cylinders and dyno over 600 at the wheels with the stock pump. SLK32 Germany uses this pump and runs stacked pulleys with no lean conditions.

 

I have had an electronic and mechanical pressure gauge on the rail. NEVER saw a pressure drop, when I did testing WAY BACK I had 17:1 A/F [with the 178 pulley, now have the 185] and set the regulator to 80 PSIG and it went to 9:1 PIG RICH or lower, 'limit of gauge 9.0'. This was with up to 20 psig boost.

THere is no limit imposed by our regulator or pump as far as I know. If there is Id check the pressure differential across the regulator filter assembly.

Our leaning is caused by the increased intake manifold boost pressure, pushing back on the injector reducing its EFFECTIVE pressure at the pintal. Nominal 60 psig - 20+ pounds of boost, = effective 40 psig and 2/3 's the fuel delivery. Several others have tested this and had similar positive results.

THe leaning and tuning issues are largely solved, clean up of the design is going forward and I have Rob doing design work on his car ( Theres an odd situation, He's doing design on my approach). By the second quarters beginning, Id estimate the kit would be available from Nedswings ( my joke name).

Should be able to plug the PC into the data logger and adjust the numbers till you beat your self bloody like that one AVATAR shows on the guy on the keyboard. Want a setting have at it....... THis is one of the two designs ---make that 3 designs I have been working on when time permitted.

Youll like the WALDIG /Rob adjustability, and he will get it cleaned up. But I digress.WOODY

The intercooler that we have is fairly stuffed and I doubt that the interior has much more to offer as far a heat exchanging goes. I really got to get people to flush the radiator H/E and drain into a clean cloth to show others what I have found - Gunk. Youve seen it on the old impeller pictures of broken stock pumps, that has to be worth 5 - 10% eficiency losses and I may well be conservative.

 

Yay Woody and Rob I cannot wait to get this. I cannot say how much I appreciate everything you have done for us Woody. I luv your supercooler and your Pulley Saver it is so well built and fit just like it came out of the factory. Keep up the good work.

Paul

 

Ditto!

Woody, will you need the zeitronix to be able to adjust fuel delivery?! I hope not!

 

Zeit, well yes to be tunable, other options possible, but you should have a zeit anyway.

Thanks, what about the oil separator, its worthy too, hee hee

Oh and there is the 35 extra hp from the dual CAI design (at 2000rpm to 3000)


All a labor of love, payback is in the satisfaction of seeing the cars do better.


Woody

 

lol not what I wanted to hear, but ill wait and see if it would be worth the purchase.

 

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Woody are you saying you can make our Zeitronics datalogger tune the ecu, or affect fuel delivery some other way. Im not following...

 

That is exactly how I interpreted his reply too.

 

I've been telling people that the pump works but some members think I'm full of S**T. I've been told my car is just messed up because NO ONE RUNS LEAN WITH A 181 or 185 yadayadayada. Others working on another solution, have requested data logs because they don't believe in this solution. I don't sell the pump so I have nothing to gain. I am simply trying to help others out like SLK32Germany helped me. This fuel issue has been going on for quite some time and I solved my fuel issues along time ago. SLK32Germany, with the help of AMG tuners in Germany, using the SL55 pump has also solved his fueling problem. Being that AMG, the original builders of the car, solved the problem using the SL55 fuel pump, why are so many of you resistant to this simple solution?

 

Sure you could. The Zeitronix has user setable triggers. See this link. Connect the trigger to a relay and you could power an external device.

But reading Bulldogger's reply, looks like if you want simple, just get the SL55 pump.

 

SLK32 i have question. How lean were you running before and what was the temp? And have you monitored the afr on the street?

Ive watched completely fine AFRs on the dyno run up to 20+ on the actual street.

I really want to believe the sl55 pump will fix my issues but like i said the walbro 255 made no difference at all.

 

I find it hard to believe that running lean will increase INTAKE air temps. If you were talking EXHAUST gas temps, then yes.

I need to hook up the laptop and have a look at mine. You have me curious now...

 

Running lean creates higher cylinder temps, heats up the head, engine oil and valley pan, supercharger sits on the heads, intercooler hangs over the valley pan. Being heat rises you start to heat soak an already inefficient design for sheading heat

 

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