See my blowthrough thread, but this is the post https://www.evolutionm.net/forums/sh...&postcount=114 that is relevent..

Anyway, This unit can be used as a blowthrough/drawthrough.. Since the demise of best one products (Pro Flow) Granatelli has taken over support and sales for the MAF sensor, but it seems that the electronic component will fade away..

I am pleading with TurboXS to reconsider allowing an analog (5v) maf input in place of the Karmann sensor, and an AIT sensor, with a Karmann mapper/translator built in to the UTEC's firmware

The blowthrough maf is accurate, adjustable with its controller box (I can scale for injectors and never touch the UTEC)

Its Karmann curve is fairly linear and predictable, airflow is based on actual airflow into the engine, its not calculated, and its not prone to disruption.. This sensor can outflow the Intercooler pipe its installed on.

I can adjust my idle quality, mixture, etc..

 

Awesome Jack!!
Where did you get the Blow through MAF from and how much did it cost? This is something I would be very interested in picking up!!! Also, can this replace the factory MAF for the stock ECU?

 

Yeah there's a whole thread on my adventures with the MAF.. Unfortunately I aquired my setup through pro-flow, their now defunct, the sensor itself is a version of a ford Cobra MAF sensor (Granatelli sells it) the IAT sensor is a ford mustang sensor (I have an interchange part number somewhere) if TurboXS can integrate the karmann converter features into the UTEC, the converter (that Best One Pro-Flow used to manufacture) would no longer be necessary, so you'd only need to create the wiring harness to plug it into the stock harness.

As it stands now, my setup with the ProFlow Karmann converter will function with a stock ECU, and therefore with ANYTHING that still uses the stock ECU (Piggyback, Reflash, AEM Standalone without speed density, etc..)

Obviously the maf curve is different, but it more closely reflects the actual air demand of the engine, similar to speed density, only its a real measurement and not a calculation based on RPM, Temp, Boost/Vacuum...

You can integrate the sensor itself into an intercooler pipe (My second gen unit) or use the entire bullet unit in your upper intercooler pipe.. Or even as a drawthrough (Yes, it will work in the same location as the stock sensor too)

So far, there is only one company still producing a Karman converter that uses the ford sensor, that is Split Second (www.splitsec.com)

Ramchargers produces a unit using a GM sensor, however I have reservations about the GM sensor in a blowthrough configuration (and of course condensation)..

I am hoping at some point to get some information on the pro-flow converter, and possibly continuing development on it.. But its too soon to tell.

 

BTW, this is the link to the original thread.. https://www.evolutionm.net/forums/sh...lowthrough+maf where I posted all my development info..

 

Ime still sitting on the Ultimate racing blow through. Just havnt had time to play with it......

 

Hey Jack, ive seen the UR blow-through MAF at Z1 performance, but do u think its worth the $600 price tag? With the UTEC, its almost like a stand-alone EMS, but i dont man.....but it would be really cool to run a VTA BOV and not have any stalling/stumbling issues! Oh well, please keep us updated!

 

Subscribing

evoisdream

 

If you are not yet convinced. Just read this Quote from Jack in the original thread. Come on Turbo XS! Make this happen for us please.

"Additionally, I'm also running an HKS SSQV which is loud and ugly sounding, but it holds boost so I have a nice stable 20psi of boost through redline... so there's no doubt I've picked up 30 or so HP thanks to that too.."

 

FWIW the UR kit is the same kit I have.. The original components were aquired through UR, however my original Karmann converter was heat sensitive and had to figure out who the manufacturer was.. if UR/Z1 still has the parts, get them if you can.. Its a little difficult to get set up initially but its made tuning my car alot easier.. I wouldn't ever consider using this to solve a stalling/stumbling issue with a VTA BOV.. Thats just a waste of money if you want to do that.. However, I plan on running dual HKS SSQV's to get adequate venting with some of my future plans. But the stable non-distorted airflow is the biggest advantage.. off-idle the car can stumble on occasion because it doesn't "Tip-in" the same as it used to.. Which is why I'm hoping to see these things integrated into the UTEC (at the least, Idle speed control, tip-in (accelerator pump compensation), signal clamp at idle, etc..)

I'm still working through some minor issues with the MAF curve itself, since the airflow rate at part throttle is a little different (the curve ramps a little differently than stock) it throws your short term trims off slightly, so when you come to a stop, the trims take a short period of time to readjust, I was able to fix that artificially in the 0% column though..

lets just say I've gotten my long term fuel trims to show 0.8% Thats as close as you can get to having it OEM, and even the OEM components are off by 6% most of the time, which means the ECU has to learn.. I can reset my ECU at any time now with no learning time needed (except for A/C trims)

 

The biggest problem with any of these installs is "plug and play" I can understand why you haven't gotten around to it.. when you have the ability to plug and play, you can get your sensor in the pipe, and if you can;t get it working you just swap the stock MAF back on.. and come back to it later..

I have found a vendor that sells connectors and components, I will be sending them pictures of the typical connectors used on the Evo, and see if they can make up male and female pigtails for these.. The three I personally need are

1) MAF connector (male and female)
2) Boost Control Solenoid (male and female)
3) TPS Sensor connector (Male and female)
4) Ignition coils Male and female

Unfortunately there's a few people who have some of this data, but are holding out on sharing the info. I can understand why, since you can then easily create DIY kits and take away some market share..

I have 3 kits in mind that I want to create (just wiring harnesses and sensors if needed)

1) Ignition kit, which has a wiring connectors to the coil harness, secondary harness for inexpensive motorcycle denso coils, and you supply your ignition box and hook up the wiring..

2) GM Boost solenoid harness (solenoid you can get yourself) but it would be a pigtail with the correct connectors for the GM solenoid and stock solenoid harness, with the right resistor in the wiring so impedence is correct.

3) MAF Jumper harness.. basically just a male and female extension harness, you can modify it as you would like for your own use, splice it, extend it, or just cut it in half and use the connector you need.

Eventually when I finally move and get my workshop set up again, I might start producing some karmann converters and plug and play kits for several different items... external in-line fuel pump kit, an under-hood accessory bracket kit to give you guys an easy place to mount external coils or ignition boxes, an adapter to use the stock airbox without a MAF (a placeholder for the maf, this same adapter would also be the basis of a drawthrough MAF kit) etc....

But you guys are looking at about 6 months before I'm in a position to work on these things.

 

At first I thought that the blowthrough MAF had no real advantages over an AEM EMS with UEGO, especially when a UTEC and blowthrough MAF costs about the same. After Jack explained the advantages and I read his thread, I actually think this is a better solution. If TurboXS offered this, I think many people would move to UTEC (especially because of Jack).

 

yeah we need more people like jack so he doesnt have to deal with all of us! i bet it gets annoying hahaha

 

LOL

Well, the UTEC needs a few additional features, and a alternative to the stock MAF (whether its speed density or an alternative MAF) which I've spoken about in the past..

the UTEC can become THE tuning solution if these minor things are added/addressed..

1) Idle Control, Tip-in (accel pump feature), idle speed control, idle comp (keep the trims in check)

2) Alternative to stock MAF

3) Alternative to the stock boost solenoid for boost control (I know their working on this one)

4) a Fourth map to control the solenoid output as duty cycle (boost/tps/rpm referrenced) This fourth map can be used to control a nitrous controller or WATER INJECTION SYSTEM

5) Two Step setup (different RPM for launch and flatshift, plus either can be disabled if needed)

6) reconfigure the shift light settings slightly to work more similarly to the Solenoid output, but can still be used as a shift light if the coolant temp/pressure settings arent used.. There's 3 of them, and most of us only use 1..

I know its a large order.. and its offtopic to this thread.. but I am only looking out for the best interests of my favorite product..

PLUS, the UTEC doesn't remove OBD-II capability, and if your careful about your adjustments and mods, you won't throw CEL's.. which means WAHOO! It will pass an OBD-II inspection. Anything that removes OBD-II in a street vehicle is outright breaking federal law.

 

Yup I still think Jack need to make a "Tuning the UTEC for Dummies" book.

 

yeah jack i agree with everything u are saying i would love to c the utec evolve... i love mine and have only had it in for 2 weeks haha i just like dataloging and playing with it ..

i would love to c it become closer to a stand alone or better without all the issues and the tuneability