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Recall that with or without a battery/diode backup a 'soft' reset can be done anytime by holding the gas pedal to the floor before and while turning the ignition key to 'ON' (release before starting).
After a hard or soft reset, if you have a CEL enabled, the CEL will stay lighted after starting until revs are raised over 2100 rpm. (One time only per reset.)
I'm new to Rennlist but have owned my 91s4 since '00. I just ordered your EZK chip. Looking forward to enjoying all the same benefits I've read in this thread. My car is mostly stock but it has an X pipe and no cats, and has stock rear muffler.
One Question: In one of the many posts someone with a 90 S4 asked about his CEL not being connected, or something to that effect. Does my 91 have this lamp installed , or what state is it in? Cant wait to try out the chip. I'm going to drive the **** out of the car as it is right now to make sure I have a fresh butt calibration.
Ok another question, If I try to measure 0-60 runs and compare before and after, will I see much improvement since 0-60 runs are basically WOT all the way.
Really excited.
I'm new to Rennlist but have owned my 91s4 since '00. I just ordered your EZK chip. Looking forward to enjoying all the same benefits I've read in this thread. My car is mostly stock but it has an X pipe and no cats, and has stock rear muffler.
One Question: In one of the many posts someone with a 90 S4 asked about his CEL not being connected, or something to that effect. Does my 91 have this lamp installed , or what state is it in?
Hi, I think that was me. My '90 has the CEL cut out in the dash, but no bulb (I think the answer was that it was only used in some markets).
I didn't bother attempting to add a bulb and connection to the EZK, I just got in and enjoyed the "new" car!
Still wondering about the added value to S4 and GT in stock shape with Cats in place. Do we need the S300 LH chips as well?
Yes? Obviously not as much as with more modifications. Mainly you should notice better response.
There is no companion LH chip for the EZK-S. It will adapt to whatever fueling you currently have.
Originally Posted by mikes928s4
My car is mostly stock but it has an X pipe and no cats, and has stock rear muffler.
One Question: In one of the many posts someone with a 90 S4 asked about his CEL not being connected, or something to that effect. Does my 91 have this lamp installed , or what state is it in?
Ok another question, If I try to measure 0-60 runs and compare before and after, will I see much improvement since 0-60 runs are basically WOT all the way.
Good setup!
Your 91 is wired and has an empty bulb hole for the CEL. It just needs a bulb installed, LED or incandescent. (I posted an example red LED bulb number previously in the thread.)
The focus of the chip was enhanced response and drivability but if your car is in good shape and everything is adjusted properly (EG cam timing) you should notice a difference.
Ken is there much difference with your latest version 2.1?
All the 2.0x versions have one problem or another.
I have been extra busy moving into a great new workshop space but once settled I hope to contact all the 2.0x people for address confirmation to send them a 2.1 chip.
Made my First season Test Drive with the new 2.1. Smart Chip and is was great experience.
special thanks to my friend Schocki also a real 928 Aficionado who helped to make This happen!!!
I will never forget our short F-458 spider test drive last summer with you as copilot at my side ;-)
MY 1993 GTS Manual, refurbished LMM by JDS, von Twistern LH-Chip, fine calibrated and adjusted fuel injectors by Cliff Pollard GB with 4 sprayer outlets on each with 20,4 lbs/h, Liphardt 200 Cells Metal Cats therefore the Secondary Air Pump could be deactivated, Techart RMB, CERATEC LIQUI Moly Additive , NGK spark plugs, Motul 300V COMPETITION 15w-50, 2.5 bar in MICHELIN Pilot Sport N3 half worn, red BOGE M033, K&N Airfilter. Since over 10 years highend ARAL ULTIMATE 102 ROZ fuel only which contains Bio Ether instead of Ethanol.
7°C sunny , windstill. but unfortunately the LED didn't came just in time.....
The GTS Started at once After 4 month wintersleep, warmed up ideling while clean it with my favorite "Prima Slick Detailer"
and then i Drove on secondary roads in bavaria over 20km reving through the gears and now it was ready for a fast blast on the Autobahn Up to 282kmh Top speed.
SUPERB super smooth performance while shifting through the gears, with much more agility. The Performance is absolutley linear.
THE BEST IMPROVEMENT ON THIS CAR WHICH I OWN SINCE 2003 FELT WITH MY POPOMETER.
It Feels as if an Angel is Pushing You all the Time while You rev through the gears with a bright Smile in your face.
I enjoyed every kilometer of driving and and so my jetblack GT3 TOURING will have to stay this year more often in my garage and the 928GTS will be prefered.
My GTS had a Landshark von Twistern EZK tune Chip before installed and was running always too rich .
Now it runs as it should be with a darkbrown exhaust pic and no more black spitts on the Rear Bumper.
If i reached the rev Limiter before This was a hard Stop experience Not far away from biteing in the stearing wheel.
Now This is a much smoother Action while Reving the 3 gear up to the Limiter.
Back Home i Made a System LH adujstement of the idle rev with my BOSCH KTS 300 to a now stable Lower Level.
Chapeau to KEN and SCHOCKI for All the efforts taken in This great Project !!!
stay tuned guys
best regards Klaus
After Test Drive ;-)
.
Last edited by 997 GT2; 06-30-2021 at 06:26 AM.
Reason: Faults
I am adding a maximum of 93 AKI (98 RON) to the recommended octane level of 91 AKI (95 RON). Except possibly for GTS, super high octane levels could actually decrease performance. S4-up were designed for premium unleaded when ultra-high octane unleaded was not widely available. The octane rating by itself does not add power! Too much advance could fire the spark way before the piston reaches the top of its stroke reducing power.
(This is assuming zero cam timing. Advanced cams = higher dynamic compression = higher octane requirement.)
Getting the most power out the engine is not as simple as adding 10 degrees of ignition advance at medium-high load. (Looking at you AutoThority/JDS.) It is about getting the ideal advance which is often (but not always) just below the knock limit. This can be tuned somewhat with the EZK-S by picking the correct octane level which may not be as high as you would like to purchase.
If you have a CEL light you should see some activity in the beginning which trails off to eventually only occasional flashes. If hardly any flashes, cam timing may be retarded and/or the octane level is too high. Lots and lots of flashing indicate advanced cam timing and/or too low octane. (EG. 89 AKI on my S4 was far too 'noisy' at cam zero.)
Note even with high static compression ratios the effective (dynamic) ratio may be lower because of high lift cams for example (EG. S3/GT).
Ken,
Aïe... I’m running E85 fuel... not good for the chip? Do I have to lower octane adding 95 RON fuel? If I do that I will inject too much fuel lowering power...
Raphael
All the 2.0x versions have one problem or another.
I have been extra busy moving into a great new workshop space but once settled I hope to contact all the 2.0x people for address confirmation to send them a 2.1 chip.
All the 2.0x versions have one problem or another.
I have been extra busy moving into a great new workshop space but once settled I hope to contact all the 2.0x people for address confirmation to send them a 2.1 chip.
Ken, good morning, what is the problem with the chips 2. 0x? Is it the one that I have installed in my s4?
E85 is a different story? The fuel itself needs a longer burn time so max'ing out the advance may be beneficial.
yes and also I understand that it is more resistant to knock and could provide more power or get a reduction in fuel consumption with optimized advance?
03-02-2021, 04:18 PM
