Epsilon23

Hi, I 'd like to know the diferences between these chips, and which is better, or if all run well. Have you got some bad experiences with any of them???

Thanks.

Karlos G

iTrader: (4)

IIRC most of them just remove the boost cut and it's only the Ahmed Bayjoo chip has a different igntion map.
That is assuming your talking MFI Escort RS Turbo ECU?

Epsilon23

Yes, Escort rs turbo s2 with mechanical inyection. I have just bought an ecu chipped by superchip, and I'd like to know your experience with this chip. To be able to increase the boost over 0,7 bar I only have to remove the old ecu and fit the old one??? Plug&Play

Thanks.

ROB7656

no plug and play .need to get fueling and timeing matched to your set up/boost

Epsilon23

How can I do it? Exist any handbook or any help to do it myself???

rstdave

iTrader: (3)

Ahmed bayjoo all day long in my opininon, tried varous ones includng a superchip which was rubbish! As Karlos said above, ahmed maps an ignition curve into the chip which made it so much more responsive off boost, superchip i had retarded the ignition big time and made the car feel like a laggy pig lol! Oh and if you don't know what you're doing it will need to be set up by a tuner afterwards, fuelling etc.

jamieRST

hhhm well i have a superchips chip and my cars ok

rstdave

iTrader: (3)

Based on what?? Have you used any other chips/setups?

jamieRST

i ment my car runs fine at boosts up at just after 2k and hold power through the range,my boosts at 12psi,so superchips cant be that bad.

rstdave

iTrader: (3)

The car may run fine, mine did when i used one....but if you actually tried a chip that had a mapped ignition curve you would see the difference, it's very easy to think that what you've got can't get any better!

jamieRST

wasnt saying that u cant get any better,i was just pointing out that i have a superchips chip and my cars fine,i didnt buy it it came with the car so not too bothered anyway

morph

iTrader: (1)

i was led to believe that the ignition on an rs turbo could not be mapped it could only be altered at idle, maybe i was wrong.

Karlos G

iTrader: (4)

It cant be live mapped, but the ignition curve is stored in the chip in the ECU, whatever brand of chip you use will have it's own map, could just be a standard map with the boost cut removed or it could be custom like the Ahmed chips.
The ignition retard is then controlled by that ECU based on the MAP sensor input and I think RPM (not 100% sure on RPM), you set the 'base' timing at idle with the hose to the MAP sensor disconnected and that is your starting point for the ECU, if you get what I mean?

morph

iTrader: (1)

i am still sure that the ecu can't map the ignition at all all it can do is retard or advance but not have any stored points as such. I am sure i read about this a few years ago where they did a massive test with all these ecu's and i am sure they said all of them litterally did one thing and that was raise the boost limit and the rest was down to the tuner to tweek.

botters

iTrader: (2)

morph is right the rst mfi ecu cannot have a map for the ignition timing this is set manually after a chip has been installed i had bayjoo chip on mine when i bought it and it was detting badly when i boughti took it to msd and they set it properly with there own chip and now runs bang on all the rst ecu does as far as chipping is lie to the map sensor in terms of boost level however i do find that a cam and vernier pulley are the only ways you can alter the timing on a mfi rst apart from actually turning the dizzy but this will only count for static timing ie can be changed on tickover but not anywhere else in the rev range, you need to change to efi for any sort of mappable curve

rstdave

iTrader: (3)

Not 100% sure you're correct but i'm not about to phone ahmed up to confirm it lol

Karlos G

iTrader: (4)

You a little off the mark there mate, the ECU retards or advances the timing based on the MAP sensor and ACT sensor input, it 'knows' how much to do it by from the map stored in the chip, if it didnt then all MFI RS's would detonate as the rev's and boost increase
Also a vernier pulley adjusts your VALVE timing not your ignition timing mate, the ignition timing is altered as a result but you wouldnt fit a Ł70 pulley to do it when you can just twist the dizzy would you?!

botters

iTrader: (2)

lol i dont even remember writing this! must remember to stay off passion ford when pissed

Karlos G

iTrader: (4)

LMAO! Quality mate!

botters

iTrader: (2)

ha ha few sips of ale and my knowledge dissapears!