APT Mapping - Apexi S-AFC or S-AFCII

[Gary@APT]

APT are highly experienced and extremely competent in mapping a variety of different systems. We use the Motec PLM Wideband Lambda Reader for monitoring Fuelling. We have various other pieces of equipment, such as a Sun Exhaust Gas Analyser which may be used also.

For the Nissan 200SX we recommend and specialise in the Apexi products.

For Low-to-Moderate powered cars, the Apexi S-AFC range is an excellent choice to give an adequate range of adjustment to the Fuelling system.

This device has lots of additional functionality, such as the ability to display in a number of different formats, conditions such as RPM, Injector Duty etc etc.

The Latest revision of this item is the S-AFCII. The improvements made on this new version make it by far the better option. It has a 'Knock' facility, which gives the ability to effectively monitor the safety of the Engine and also allows us to be a little 'Braver', thereby extracting a little more power. It is also nicer to use.

In addition to buying the S-AFC, the labour charge for Fitting and Mapping is £150. This is based on a car with Standard Fuel Injectors.

We have successfully set these up on cars with Nismo 555cc Fuel Injectors and due to the increased amount of mapping required, we apply a £20 surcharge, making the total £170.

If the unit is already fitted £20 can be subtracted from the above figures.

In the case of Remapping, which we advise after any changes have been made to the Intake/Exhaust/Turbo/Injectors etc the above prices will apply. We advise to carry out changes to your cars spec in batches to avoid repeated remapping costs. However, it is considered unsafe to drive a car under load once changes have been made until the Fuelling has been checked and Reset.

The car is normally required for either a Morning or an Afternoon to carry out this work.

Thanks.

Christian.

[twinturboch]

I have an AVC-R and S-AFCII in my car. The AVCR is setup but the S-AFCII isn't set-up, although I believe it is connected. How much would it be just to get it mapped and running? Thanks :)
(Currently running 1 bar and I want to keep it roughly there.)


Edit: D'oh, missed the bit about subtracting £20 LOL So it's £130 yes? If I did want it mapped, how long does it take and when would you be able to do it? I'm seriously busy and finding the time is the only issue.

[sunnybono]

stupid quesion i know.... but when/if the batterys goes flat (or gets disconnected) does the s-afc need remapping or is it ok for a while?

[Gary@APT]

I have an AVC-R and S-AFCII in my car. The AVCR is setup but the S-AFCII isn't set-up, although I believe it is connected. How much would it be just to get it mapped and running? Thanks :)
(Currently running 1 bar and I want to keep it roughly there.)


Edit: D'oh, missed the bit about subtracting £20 LOL So it's £130 yes? If I did want it mapped, how long does it take and when would you be able to do it? I'm seriously busy and finding the time is the only issue.

LOL, yes the cost would be £130 if the car is on Standard Injectors. As for when we would be able to do it, I have some time slots available in early November. We can do some Saturdays. As I said above, we normally only need the car for 2-3 hours. Let me know when is good for you.

[Mikesx13]

Hi mate, what do you consider to be 'low-moderately powered'?

[Mikesx13]

In your opinion is an SAFC II suitable for mapping a 330bhp CA18 DET?

[Gary@APT]

stupid quesion i know.... but when/if the batterys goes flat (or gets disconnected) does the s-afc need remapping or is it ok for a while?

No, the unit will hold the settings. Unless of course you use the 'Initialize' feature!!! :eek:

[twinturboch]

No, the unit will hold the settings. Unless of course you use the 'Initialize' feature!!! :eek:
Good to know cause I disconnect the battery on mine whenever it's not in use. :)

[Mikesx13]

In your opinion is an SAFC II suitable for mapping a 330bhp CA18 DET?

Any opinion on this Gary? :)

[Hallsy]

If using an SAFC to control fuelling am I right in thinking that there is no need to use re-mapped chips (i.e Horsham Dev, etc) as the fuel map would be altered by the SAFC? If so how is ignition map controlled? Do you need to use a mappable ignition unit alongisde the SAFC?

[liquidsmoke]

what would you suggest changing the ignition timing with?

[Lenagh]

I have my S-AFCII setup up by gary on 555's and its spot on, loads more economy on journeys and lots more performance when driving hard !

Oh and my cars passes its MOT emissions first time :D bargain value setup he does. Thought it would be a compromise with not being able to adjust the timing but it was more than adequete and I could run the desired boost I wanted without any issues.

Couldn't imagine bothering with a powerfc unless I was slapping loads of crazy ancillaries on.

[Hallsy]

what would you suggest changing the ignition timing with?

That's what I was asking?? I think Apexi do a unit that you can alter the ignition map with, but not sure if it can be mapped against air temp, load, etc. Failing that I suppose there are system like Omex mappable ignition, but then you could just buy a Power FC that will do both fuel & ignition.

I'm just wondering what is best for low levels of tune such as stg1 or stg2. H Dev chips for maps, or use SAFC-II but with what ignition control?

[Mark]

I know a few people are using a H Dev chip and doing fine tuning with the SAFC2 :nod:

[Lenagh]

I suspect you'll just end up in powerFC land mate.

This is just my opinion and there are many others ! for low levels of tune the SAFC is more than enough to map your cars fuelling nothing else required other than a steady means of boost control.

Adjusting my timing at this point for me "might" get a few bhp but nothing that I could justify the expense of the PowerFC for, I see the FC for the time you rebuild your engine, put silly size injectors in, huge flowed plenums, fuel rails, mongo throttle bodies oh and the obligatory monster turbo. Thats when the FC comes into its own, when you have cool bolt on items that your ECU will go WTF IS THAT at.

To be honest at this level the biggest problem we found on my car was the overfuelling at the top end and across the range. The SAFC sorted this out and now she pulls like a train all the way to the line. This might be different for 13's I don't know. The addition of 555's was to allow me to run a bar without being at the top end capacity of the std injectors. (safe land really thats all).

I'm running spec wise.

ProfecB set to a bar
SAFC2
FMIC
555's
filter, zorst etc

Like I say lots of opinions, this is mine and i consider it a good value solution to map lower end cars like mine that you want to just get "safe" or ok for the track etc.

[Mark]

I

I'm running spec wise.

ProfecB set to a bar
SAFC2
FMIC
555's
filter, zorst etc

Like I say lots of opinions, this is mine and i consider it a good value solution to map lower end cars like mine that you want to just get "safe" or ok for the track etc.

I am running the same spec along with tubular manifold and i agree my car pulls like a train even on the low setting (13psi) i rarely use the high setting (18/19psi) unless i need too ;)

Having it on the dyno next month so am interested what it makes but the last time i was on the rollers the power curve was the dogs bollox :thumbs:

[Hallsy]

Agreed that Power FC is probably in the realms of high end tuning, but you can't ignore the gains in driveability that ignition mapping can give, especially off boost.
I think as has been said, using say an H-Dev chip as a base for fuel & ignition maps then using a SAFC/II to fine tune fuelling to suit is a good idea, as the chips ignition map will be far better than std anyway.

[Lenagh]

If its of any use info wise, I'm sure mines just set to stndrd timing, 14-15 I think it is. We didn't touch it after that. I don't know what Jez's chip does in relation to timing must be something better than std though from what your saying. Whats the damage on a chip plus SAFC mate ? I got a sneaky suspicion it might be close to that of the powerfc

in which case might recommend getting that so your totally future proofed then for any changes.

i think they knock about 595 inc the commander handset.

[kev1nc]

I've also got Gary map on the SAFC2 with 555's and running about 17psi all the time and its spot on :thumbs: I could be wrong here so dont shoot me down in flames but does the standard ecu not constantly change the timing slightly to suit, within certain limits of course :confused: I was swung towards the SAFC2 by the knock guage (not that its ever moved :thumbs: ), it gives me that little bit of added security when giving the car stick on the road or track :nod:

[Davey D]

Are there any REAL issues with these units, as there seems to be a lot of mixed views on here about them

[Gary@APT]

Are there any REAL issues with these units, as there seems to be a lot of mixed views on here about them

Based on the details in my original post, we think the S-AFCII is a fantastic device.

OK, so I guess in an ideal world every car would be 'Live' mapped for both Fuelling and Ignition, but this isn't always practical.

So, after that, its a balance of either an off-the-shelf Chip, which wasn't 'Live' mapped on the car in question, or an S-AFCII which can be mapped 'Live'. OK, so the S-AFCII doesn't cover Ignition timing, but its likely the ability to Map Fuelling outweighs the ability to tweak Timing/Fuelling using a Generic Chip.

I would go on to say that if you are at a point in the Spec of the car where Timing is a real concern, then perhaps it should be fitted with a PowerFC? :thumbs:

Thanks.

Christian.

[Davey D]

i am currently running with the following mods:

FMIC
boost running at 16psi
Tubular manifold + elbow + full decat + exhaust system
Uprated fuel Pump
Cone filter
Colder rated plugs

Lightweight flywheel + uprated clutch
removed viscous fan + fitted lightweight pulley wheels

on a recent RR day it pushed out 295bhp/275lb/ft, with a nice smooth power curve, and good peak torque figure.

next i was looking at nismo 555cc injectors, bigger turbo, Z32AFM, and some sort of mapping.

do you think SAFC-2 is up to the job, or should i jump to something like E-manage, or even Power FC ?

[Gary@APT]

An S-AFCII should be more than capable of controlling the Fuelling for that set-up.

Of course a PowerFC would be ideal, but balance out the cost and I reckon the S-AFC wins, no? ;)

However, that does depend on the Turbo you choose. You got any idea's yet?

Christian.

[Davey D]

i was thinking about going down the GT2871R route unless there was something else more worthwhile ?

[Scottie]

I would add two points :-

1. Am very happy at the driveability of my S14a and power setup by APT with SAFC2, AVCR plus the usual suspects. No ignition altered.

2. If you hunt around you can get an Apexi ITC (Ignition Timing Controller) for about £90. This lets you set the ignition +or- upto 15 degrees at five points throughout the rev range, 800rpm..........3 more points then 7200rpm. This is simple 2D mapping, just revs vs timing, so is no where near as good as the PowerFC, but if you are getting to the point where you want to retard top end but advance mid range it does a job.

Personally, I didn't go for the ITC as I think the above points are correct, i.e. when you get to the limit of the SAFC2 perhaps you should be looking at either PowerFC or Emanage Ultimate etc.

[Chris B]

When I switch the ignition off in my car the S-AFCII seems to lose the memory of the highest rpm, knock, airflow and throttle % values, is this normal or will it lose a map when the ignition is switched off?
The A'PEXi RSM doesn't lose the memory when ignition is switched off so I would presume something isn't quite right?

I guess I'll go and read the manuals...