iliasfyntanidis

FIXED Thanks for all the support. After 3 years on jack stands and a major rebuild with top notch parts the car is ready to hit the road and track.

Adam i will disconnect the fuel pump relay and send 12Volts straight to the fuel pump today after work.I will also try what you suggest me.The funny thing is that the car starts with the factory ECU.BUT I don't hear the fuel pump priming with the stock ECU either.

Well I measured 12.3 Volts before the fuel pump relay but after the main engine relay on the White/Blue wire that's on the left. The one in the green circle.

Haven't checked that but will do. Things are messed up a bit because I have build a harness adapter(very tidy) to connect the Vipec with the plugs of the OEM harness. Possibly have done something there. I know that the fuel pump for safety reasons primes when engine is started i.e. airflow is being created not when key is in ON position.Maybe a treaty of the OEM harness does not meet up with the philosophy of my adapter harness. Hope there isn't any damage with the board of the ECU.Is there a dedicated circuit inside the board where I can take a quick look and is it easy to open the case easily apart?

Have done that also. Even changed Auxiliary Outputs. Can it be the something like the problem that it is described on this topic. Can I send to tech support the wiring diagram of my Mazda just in case there is something that overlooked. For example the earlier MX5's had a switch on the AFM. Mine doesn't (later model 2000 has a MAF which is deleted )but maybe there is somewhere else located that I missed.

Yes.

Have wired up everything. Coils do spark on test mode, injectors the same, fan kicks in etc etc. One problem though. When I put Auxiliary 5 on TEST ON which is my fuel pump I don't hear her priming. I have connected 3N from my engine harness to Auxiliary 5.The factory ECU pinout is on post No1. Another image on the bottom. Any ideas? The engine starts right away with the factory ECU. So no problem with fuel pump relay, fuel pump or main relay.

Thanks again for the technical support.

I purchased a Bosch knock sensor. Should I ground the shield and one wire to Shielded dedicated GND which Vipec has, or should I use GND OUT which is for sensors?

You are golden. Thanks again for your time and support.

1)The 3A is ground for the fuel injectors. 2)The 3B is the PCM ground 3)The 3C the output device ground(what's this?) All of them are factrory pins in my OEM harness. Till now i have grounded all my extra sensors and some factory ones such 3 GM MAP Sensor,CLT Sensor,Fuel pressure sensor and IAT Sensor to my Vipec where GND OUT is as this is for sensors.All of them in the same GND OUT. I don't know where to ground the 3A,3B and 3C pins in my Vipec.The original pin out of my harness is in top of the page.

Bought it assembled from eBay. Item number https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2F273138618841 The seller sent me a second one. Hope to be OK. Next time I will assembly it my self. Report back.

The fact is that I bought the Pull to Seat version and when I tried to connect the sensor to the connector the two plugs that are placed together went far way back. Only the one that is placed alone stayed flush with the connector body.

Purchased the pressure sensor as stated above. The connector that I have to buy is Push to Seat or Pull to Seat?

Any suggestions of what type of sensors for an accurate reading?Trued and tested for accurate readings.

Hi there. Anyone has a calibration table for this VDO sensor? It maxes out at 80 psi and also has a warning contact of low oil pressure wich is 6psi +/-2psi.

Thumbs Up for the best tech support!

Anyone?

That's correct. i have misunderstood those 2 values, MAP and MGP. In the Y axis(right click on the fuel map)where load is applied i saw after search how i can apply MGP.So it's clear to me know how i can add negative values.But the MAP sensor that i have and above you gave me the calibration tables how will it read negative values i.e. per the table?It's lowest value is 0 kpa and it doesn't accept negative values.In the fuel table above we have negative values.....Does the ECU with it's internal baro sensor does all this job(for the negative values) I have also noticed that when i turn the Y axis from MGP to MAP the ECU says that negative values are not accepted over there.Clever! So the question is how with the CAL tables for my Greddy MAP sensor above and using MGP can i add negative values or how does the ECU gets the job done for those negative KPA values? Edit*Something else that draw my attention is that the fuel table has MGP load(negative values) on Y axis and ignition table has MAP load(positive values) on Y axis.I see the exapmle for the N/A Mazda MX5

Simon thanks for the heads up. I need to spend more time with the layout and the functions.I noticed that CAL tables are dedicated on linear and non linear sensors etc. Something else .I was doing this on Vipec (I know that there is the PC Link outhere some years now,but Vipec seems easier on me and i am just playing around at the time) Something else that i don't pretty much understand.Will this resolution give good results while i am on N/A mode?Because i am planning to break in the engine while being N/A so always on vacuum(Will add the Supercharger later) I am asking so because i have some very aggresive cams with overlap and tight LSA angle that will give some tough time. The question is:On my y axis where load is aplied in this situation kpa should i start the resolution from 0kpa to which ever will be my end or should i start from negative values -100kpa?What factor defines that?When i was N/A i was watching my boost gauge reading while lifting off the throttle 550 inHg.Can this value be displayed with the calibration that my Greedy Map sensor has? I have seen maps on Turbocharged engines where the load is applied on negative values i.e. -100kpa and some times the load starts from 0kpa.I really tried to express what my question is,don't know if it makes sense. .

Hi there. I want to use my existing Greddy 3 Bar Map Sensor with my Vipec i88 ECU. I have found the calibration values in order to add this but it seems difficult ....Can anyone please chime in with a CAL table in the PC Link software,i.e. an exapmle would be grate. Below is the calibration table for Greddy. https://www.google.gr/search?q=greddy+3+bar+map+sensor+calibration&source=lnms&tbm=isch&sa=X&ved=0ahUKEwidgdDrt_DVAhUhJcAKHZmaDh4Q_AUICigB&biw=1094&bih=487#imgrc=4zWvYCTNeCERuM: Cheers!

Any suggestions of what part Number knock sensor should I use? I assume a Bosch but there are so many outhere? According to my calculations my knock frequency its about 7.2khz. Probably they are all the same but I see a lot of variations on pricing.

Hi there. There are 2 types of knock sensors as far as i know in the automotive industry.The Bosch style(2 wires?) or also called donut style which is wideband and the others(1 wire?) that many early Japanese cars have like my Mazda MX5 1999 model,narrowband.I have seen it on Honda's and Mitsubishi engines. I will try to keep the factory knock sensor but i would like to add one more,Bosch type somewhere near the deck surface. Question The problem that i am ''facing'' is if i have to use some type of special wire? Shielded or not what you guys use when you extend the wire or add one sensor in an engine that hasn't got one from the beggining? If someone has experience from back to back testing on these type of knock sensors please chime in. How do these 2 compare,which is more user friendly(via the i88 platform) in terms of tuning and getting the job done right? I know that the outcome has to do with the users capabilities and experience but if all equal what more experience tunners use? If there isn't any room left in wiring near the deck surface other acceptable location that provide accurate readings? Thanks in advance!

Interesting Scott. How will i do the calibration map for the the OEM fuel tank pressure?I mean it's not a gauge that i can go and buy with its calibration sheet..... Amazing how many many pins are out of the way when a standalone ECU takes it's place.

Scott the Fuel Tank Pressure pin 2A in my ECU is it something that has to be connected somewhere in the i88?