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Turbonut
 
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There is no reason why heat and A/C would not work. The wiring comes from A/C to DME and is just for info to DME to raise idle rpm in order to avoid stalling when A/C is operational. VEMS senses the A/C use and adjusts the idle speed automatically thus rendering the need for A/C feedback useless. Of course it could be used if wanted, just connect it to to any of the digital inputs and use anytrim function to set its desired action and parameters for it.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
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Old 04-04-2015, 08:27 AM
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Turbonut
 
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Here's a customers dyno sheet from his 951 with VEMS PnP. Stock 951 with K26/8 turbo, 3bar FPR and aftermarket wastegate at 1.2 bars. Dynapack dyno, 306 whp, 308 wNm.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 08-16-2015, 10:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #42 (permalink)
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Quote:
Originally Posted by Raceboy View Post
Here's a customers dyno sheet from his 951 with VEMS PnP. Stock 951 with K26/8 turbo, 3bar FPR and aftermarket wastegate at 1.2 bars. Dynapack dyno, 306 whp, 308 wNm.
That's pretty nice results, good job!

Sure that's 308 Nm and not lb*ft? That's really low in order to get 306 whp @ 5400rpm. Especially with torque-curve dropping to 250 nM@ 5400rpm. The math shows only 189 whp @ 5400rpm.
Old 08-16-2015, 02:33 PM
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Turbonut
 
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Yes, it is in fact lb/ft, my mistake.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 08-16-2015, 08:44 PM
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Looks very nice. Is it programed for the use of a MAF sensor along with the MAP. or just MAP?
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Old 08-18-2015, 12:47 AM
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Turbonut
 
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It uses just its own MAP sensor and the MAP sensor is fed by factory KLR boost line.
Neither AFM nor MAF is needed, you can replace it with a straight pipe.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 08-25-2015, 07:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #46 (permalink)
 
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Hi Racebay, I do not have big experience with car (or any) electronics but after reading this thread I understand that VEMS might be an alternative for such products like M-Tune (less the injectors, air filter, etc)? I have more or less stock 951 with A-tune, Tial WG and Gizzmo EBC. I like the set-up but it seems that the stock AFM starts giving me some problems and soon will need some maintenance or replacement. Thus I was considering the M-Tune, but I would not want to delete the OE air box due to couple of reasons e.g. the car will turn 30 soon and this might restrict me to get it historical car status based on visual check, as well the cone filter requires some more maintenance and I am starting to like the stock look of the engine bay with the OE air box. From what you said I understand that after installing the VEMS I could delete OE AFM and replace it with some custom straight pipe also improving the intake air flow at the same time. What about the tuning? Most probably I would need to find someone who could do it or is already set for 944 turbo and needs just some minor fine tune that can be done later? I am from Riga, thus in “worst” case I could go to Estonia, especially if you live in the southern part or find someone locally.
Old 08-29-2015, 11:20 PM
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when will these be available?
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Old 08-30-2015, 05:20 AM
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Turbonut
 
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It is available already 6 months, but I cannot edit original post.

smudo, I provide ECU with a tuned map that will run the car but will adjust it according to your specification before sending it out. After you install it, you just need to drive around with autotune and it will fine tune the fuel table.
If you don't want to run straight pipe, you can just use gutted out AFM, that way it will look stock outside but does not have restrictive barn door inside.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
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Old 09-01-2015, 12:01 AM
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Thanks for the explanation. I will rebuild the engine this winter thus if I will have budget left, I might also purchase the VEMS. How long does it take on average from the order till the delivery?
Old 09-01-2015, 10:16 AM
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It usually takes ~3 weeks.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 09-01-2015, 10:51 AM
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Awsome! Looks like I know what I'm getting in a few weeks. Currently running VR MAF/WS/SMT6, cant wait to get more control of my engine and get rid of the DME and KLR all together! That Price is great especially for a world wide shipping, hope to get it here to Hawaii ASAP.
Old 09-14-2015, 09:28 PM
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Absolutely no problems. I have already shipped these systems to USA, Canada, many European countries etc.
You can contact me directly via email peep(a)vems.ee for questions/inquiries etc.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 09-15-2015, 02:05 AM
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very nice results on that 951 with the k26/8!
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Old 10-28-2015, 10:08 AM
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Turbonut
 
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I made a product page in Facebook, check out the possible plug and play VEMS ECU's for different Porsches:

http://www.facebook.com/vemsporsche/



Here's TPS kit and AFM delete kit:

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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche

Last edited by Raceboy; 11-20-2015 at 03:00 AM..
Old 11-20-2015, 02:12 AM
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Who out there has installed this? Looks cool as hell. Raceboy, very basic question...does the tachometer still work with installed?
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Old 12-01-2015, 10:21 AM
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Yes, of course tachometer works
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 12-02-2015, 05:39 AM
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Hi Peep, More questions:

How much time does it take to retune for changes like different turbo, larger injectors, etc?

I read that autotune dials things in about as well as a tuner with average talent/expertise. Would you agree?

Whats involved with the initial setup when vems shows up at my door...just plugging in the unit and running the wires to the wideband?

I assume vems runs MAFs too...what advantage does using speed density have over this?

Does the stock boost gauge work w your plug and play setup?

Can more modern injectors be used without resistors?

Thanks for more info.

Last edited by wwhalenc; 12-16-2015 at 07:25 PM..
Old 12-16-2015, 07:13 PM
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Turbonut
 
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Sorry for the delay, I am in USA at the moment (tuned one 951 in Atlanta and now on a roadtrip in Florida on a 1987 944S).

Regarding retune, it mostly requires tuning fuel, but different turbo may need tuning ignition too. Tuning fuel is just matter of driving around, shouldn't take more than hour or two.
Autotune tunes the fuel table spot-on, based on the lambda target table which is easily configurable by user if needed.

Initial setup involves just plugging it in and running WB harness through the firewall grommet, but note that the WB requires bung to be in downpipe (post turbo) not in the crossover pipe like factory narrowband. Also one should mount air temp sensor in the intercooler -> throttle body intake pipe. Air temp sensor is included.

VEMS does not use MAF at all, just built in MAP.

Boost gauge does not work at this moment, I am in the progress of making it work, I have to work out the good working parameters.

Any injectors can be used without resistors, be it high or low resistance ones, just change the type in tuning interface.
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'83 924 2.5 16v Turbo, 530hp @ 1.5bar
'67 911 widebody hot-rod /2.4S
http://www.facebook.com/vemsporsche
Old 12-25-2015, 05:19 PM
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Peep, does Vems understand the output of a Bosch LSU4.2 wideband sensor?
Old 12-26-2015, 06:07 AM
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