right, heres a question where can i get my zed remapped? got used to it now and its running hardly any boost at all, i mean like 10psi! which for the spec is peanuts, would really like to turn up the boost and make some more power so where would be good either near colchester or kent and what sort of work/prices would be involved? ideas please!

Not on the Z. Single det retard parameter applied globally over the maps (&H7FB8) Once limits in knock tables exceeded then switches to different maps.

Also, Z load scale based on theoretical puleswidth where TP = F(air flow / rpm) so timing always messed up by tinkering with AFM signal.

 

Thanks for that insight John, Im still trying to get my head round the various maps. I know There is a Knock Map within the Primary Timing Map, I take it this is the large hex values (9A,8F etc) you find?

But what is contained in the Knock Sensor Map (7FE0 7FE8)?

 

Marty

Hi jack,when i was at Johns we were running out of time to set the EVC4 ,and me not remembering to take set up instructions with me it was best left alone(off)as you know ;) when you turned it on it fooking flys,so basicaly all you need to do is get to a good RR ,let them set it,and see how much boost you can achieve safley depending on fuel/det etc you will prob be ok upto 18psi,maybe more if you lucky,would think Johns allowed a fair bit to take more boost.But like i said to you before DO NOT play with the boost till you know how it will take it.Have a feelin its going to be realy realy rapid :cool:

 

Tony

Not on the Z. Single det retard parameter applied globally over the maps (&H7FB8) Once limits in knock tables exceeded then switches to different maps.

Also, Z load scale based on theoretical puleswidth where TP = F(air flow / rpm) so timing always messed up by tinkering with AFM signal.

Thanks for that insight John, Im still trying to get my head round the various maps. I know There is a Knock Map within the Primary Timing Map, I take it this is the large hex values (9A,8F etc) you find?

But what is contained in the Knock Sensor Map (7FE0 7FE8)? Marty

my head hurts!!! :(

I feel truly humbled by the amount some of you guys know!

 

But on the other hand, ignorance is bliss... :p

FAO v6Power & John Dixon

 

Mapping will be a concern of mine soon. At the mo, my car is pretty much standard apart from the cat back exhausts. I have decided to leave the cats in due to the POSSIBLE problems they could have on the turbos.

 

I am however interested in a boost controller and induction kit. In order for a boost controller I know I need an ECU upgrade. Most people seem to get fitted an 'off the shelf' chip, which sounds dangerous to me.

 

My question is, should I fit an induction kit and boost controller first then seek an ECU upgrade/mapping. As if I get an ECU upgrade first to accomodate the boost controller etc, the mapping will then be out of date. I know ECU's will learn, but how good are they? Surely a custom map is better?

 

Also, what should I go for? JWT seems to be the most popular but they are an 'off the shelf' chip and dont have a safety map which sounds dangerous!

 

What are your recommendations?

I cant speak for John so hopefully he will pop along. The reason behind the various custom maps that are available of the shelf so to speak, is due to the nature in which a Majority of owners Modify their cars in a set way.

 

For example AndyP does 3 stages of Chip which cover most peoples needs :-

 

 

ECU Map One

Available as a manual or automatic version. This map suits engines of original internal specifications with minor turbo modifications.

free flowing air filter

free flowing, un-restrictive exhaust

catalytic converters removed

raised boost pressure (absolute maximum of 1.2bar, 1.0bar recommended)

 

ECU Map Two

Available as a manual or automatic version. This map suits engines of original internal specification with minor turbo modifications.

free flowing air filter

catalytic converters removed

raised boost pressure (absolute maximum of 1.2bar, 1.0bar recommended)

However, this map has been modified to suit engines with a slightly restrictive exhaust (e.g. Mongoose) or other problems leading to detonation at higher rpm/boost.

 

 

ECU Map Three

Suitable for engines with internal modifications (e.g. forged pistons with lower compression ratio 8.1:1). Tested on a manual gearbox only.

555cc injectors

free flowing air filter

free flowing, un-restrictive exhaust

catalytic converters removed

raised boost pressure (absolute maximum of 1.2bar, 1.0bar recommended)

 

 

Each engine is different, but these all will cover most peoples needs, and for a minmal outlay. So this is usually the first port of call. Although as you have said there are different chips on the market, such as JWT. The reason I favour the SE/Nistek maps is that the cover most of the Angles, Although Andy can supply you with other maps depending on your setup. They have also been tried and tested by lots of people with good results.

 

Now, to have a ecu customised to your own car, involves a lot more work, and maybe no big gains over the above, becuase owner specific maps are usually developed for cars with modifications above and beyond those listed above in order to make the most from the modifcations and engine characteristics. Hopefully John will give an insight into whats involved in his custom mapping and the advantages or disadvantages of it. i.e. Performance vs Price

 

 

 

Marty

Thanks for this Marty. Much appreciated!

 

ECU Map One sounds the best for me, however I have opted to keep my cats. Can the map be adjusted accordingly to accomate this? Also, how much am I looking at for all this fitted? Is the actual chip included in the price?

 

Many thanks

 

Colin

Colin, The new Maps come supplied on a ROM (chip) but it cant be adjusted (without expensive equipment)..

 

Contact AndyP on here who supplies the above. IIRC the new chip is around £60, this replaces the standard one in your ECU. Your ECU will need to be socketed if the Standard chip is soldered to the board. You can do this yourself or andy or the likes can do it.

christ what have i started! thanks for all the advice guys, gonna have a think about it all, althought right now im recovering from a very heavy nite so will leave it till later on! j

Thanks for that insight John, Im still trying to get my head round the various maps. I know There is a Knock Map within the Primary Timing Map, I take it this is the large hex values (9A,8F etc) you find?

But what is contained in the Knock Sensor Map (7FE0 7FE8)?

Marty

 

The large values are the true timing figure +&h80. In this area the ECU is looking for knock with increased sensitivity.

I'm not 100% sure on the knock sensor maps but I think they're either the knock count before the det reatrd is applied or the count before switching to the lo octane (knock) maps.

 

Below is the definitions for all the parameters that were in the mapping software I wrote for the 300:

 

'Set up Fuel Maps

blnErrors = Not FM_Primary.Setup("PrimaryFuel", 16, 16, &H7D00)

blnErrors = blnErrors Or Not FM_PriKnock.Setup("PrimaryKnockFuel", 16, 16, &H7000)

blnErrors = blnErrors Or Not FM_5th.Setup("5thFuel", 16, 16, &H7100)

blnErrors = blnErrors Or Not FM_5thKnock.Setup("5thKnockFuel", 16, 16, &H7200)

 

'Set up timing maps

blnErrors = blnErrors Or Not TM_Primary.Setup("PrimaryTiming", 16, 16, &H7800)

blnErrors = blnErrors Or Not TM_Knock.Setup("KnockTiming", 16, 16, &H7C00)

 

'Set Up byte data

blnErrors = blnErrors Or Not BA_RevLimit.Setup("Rev Limit", 1, &H7FB4, 50)

blnErrors = blnErrors Or Not BA_SpeedLimit.Setup("Speed Limit", 1, &H7FA5, 1.25)

blnErrors = blnErrors Or Not BA_Latency.Setup("Injector Latency", 1, &H7F88, 0.01)

blnErrors = blnErrors Or Not BA_Feedback.Setup("Injector Feedback", 1, &H7F91, 1)

blnErrors = blnErrors Or Not BA_VTCRelease.Setup("VTC Release Point", 1, &H79F6, 50)

blnErrors = blnErrors Or Not BA_TPFuel.Setup("Fuel Map TP Scale", 16, &H7AF0, 0.125)

blnErrors = blnErrors Or Not BA_TPTiming.Setup("Timing Map TP Scale", 16, &H7B10, 0.125)

blnErrors = blnErrors Or Not BA_RPMFuel.Setup("Fuel Map RPM Scale", 16, &H7B00, 50)

blnErrors = blnErrors Or Not BA_RPMTiming.Setup("Timing Map RPM Scale", 16, &H7B20, 50)

blnErrors = blnErrors Or Not BA_TTPMin.Setup("TP Minimum Limit", 16, &H7E80, 0.125)

blnErrors = blnErrors Or Not BA_TTPMax.Setup("TP Maximum Limit", 16, &H7E90, 0.125)

blnErrors = blnErrors Or Not BA_TPLimit.Setup("TP Minimum Limit", 16, &H7960, 1)

blnErrors = blnErrors Or Not BA_Recovery.Setup("Recovery", 16, &H7970, 1)

blnErrors = blnErrors Or Not BA_ThroEnrich.Setup("Throttle Enrichment", 16, &H7E20, 1)

blnErrors = blnErrors Or Not BA_IdleSpeedTemp.Setup("IdleSpeedWithTemperature", 32, &H76B0, 12.5)

blnErrors = blnErrors Or Not BA_StartPulseIncTemp.Setup("StartPulseIncTemperature", 16, &H7E20, 1)

blnErrors = blnErrors Or Not BA_DTS.Setup("Latency Change mS/V", 1, &H7F87, 0.00048828125)

blnErrors = blnErrors Or Not BA_DRET.Setup("Detonation ign retard", 1, &H7FB8, 1)

blnErrors = blnErrors Or Not BA_HGMC.Setup("High gear map coefficient", 1, &H7FC8, 1)

blnErrors = blnErrors Or Not BA_StartTimingTemp.Setup("EngineStartTimingWithTemp", 16, &H7E50, 1)

blnErrors = blnErrors Or Not BA_IdleTiming.Setup("IdleTimingMap", 16, &H7F60, 1)

 

'Set up wordArrays

blnErrors = blnErrors Or Not WA_KValue.Setup("KValue", 1, &H7F2B, 1)

blnErrors = blnErrors Or Not WA_VQTable.Setup("VQTable", 64, &H7A70, 1)

is that all thats involved, huh. i'll just get me pc out and write one now :rofl: :x:

Hopefully John will give an insight into whats involved in his custom mapping

Marty

 

Basically on the road in a standardish car would map with wideband to get fuelling better as always leave 'off the shelf' maps a little rich - each car is a bit different and it's amazing how many Z's have fuel pressure problems without the owners knowing. Also, almost all aftermarket maps are unchanged until high TP / rpm. Found response can be much improved by closing up closed-loop area at mid table. Also a good idea if EGR removed.

Timing changes on road are limited. Have good settings for stockish cars and some big turbo stuff that I've done on dyno.

To get timing right, need to book RR time and do adjustments on each site to look for max power. Fuelling can be further optimised by adjusting for max power at each site rather then target AFR.