boooost

[Adam fc]

Right okay,so what pressure do these wastegates dump at roughly?? Is there anyway of adjusting the wastegate so i can run my fcd and have it boost to around 0.7-0.8 bar? Just this fuel cut is the only way of me controlling the boost levels.

[Adam fc]

Im going to try and increase the actuator arm length and see if this will lower boost levels.
I just cant understand why the wastegate is opening at such a high boost level from stock lol.

[Adam fc]

Right,im looking to get a chipped ecu until i can afford better.

Which one would most suit my current mods best?Im looking to upgrade the fueling,cooling etc in the future but im after a quick soloution really.

http://shop.ebay.co.uk/?_from=R40&_trksid=p3907.m38.l1313&_nkw=fc3s+ecu&_sacat=See-All-Categories

I assume that these ecu\'s are all of a simular map??

[1990_fc3s_t2]

http://cgi.ebay.co.uk/Mazda-RX-7-FC3S-1989-91-Turbo-Stage-1-Performance-Chip_W0QQitemZ280445446282QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item414bd9e88a

Anyone know anything about these chips??:confused:

Oh yeah i reckon all those jdm ecu\'s are pretty much the same, and mapped for 100ron

[Adam fc]

\'\'You will be able to run your fc at 14.5 psi boost with this chip\'\'

On a standard intercooler and fuelling? lol

[1990_fc3s_t2]

works out to 0.9bar??

[1990_fc3s_t2]

:Santa

[lee mills]

More like 1 bar i think

[Prof]

I bar on a standard interwarmer - ummm - it may well work - but I\'d hate to say for how long :Hammer
 
I\'d not go above 0.9 bar on a chipped ecu - I know that\'s workable as several of us have run chipped ecu\'s and getting that - but the stock intercooler isn\'t really geared for anything above 12 psi (0.75 bar), and the stock turbo is very inefficient at these higher boost levels.

[1990_fc3s_t2]

Do you know of anyone running the ebay chip?

[m1tch]

Do you know of anyone running the ebay chip?

Everyone has stayed away from it and either got a knightsport chip like mine or an RE-A map lol

[L18M]

N374 is a knightsport unit (stock on some mazdas)
can be picked up for about £80.
http://www.mazdarotaryclub.com/forums/showthread.php?t=30007

[Prof]

I run a Blitz Access chip - it seems to work well with stock and upgraded turbo\'s and intercoolers.
 
However, I didn\'t push the engine over 1 bar until I got bigger secondary injectors and an Emanage Ultimate.
 
At the very least you can use the emanage to examine what the ecu is doing - what timing it\'s using, what fuelling and so on.
 
A lot of the chipped ecu\'s make more from the stock setup by tapping unused potential on the primary injectors.
 
Off boost and below 3700 rpm, the primaries do all the work - the secondaries are not used at all. Then when the secondaries do come on line, the stock ecu drops the primaries to 40% and does all the additional fuelling on the secondaries. The chipped ecu\'s stage more gracefully, by dropping the primaries less, then increasing both as boost/rpm increase.
 
The important point though, is that the timing is retarded more at higher boost levels - something the unchipped ecu isn\'t going to do.
 
Oh - by the way, I\'d be cautious about that RX01 chip - I think the jury\'s still out on it, but it\'s a copy (and possibly a corrupt one) of another vendor\'s code.

[1990_fc3s_t2]

I have the piggyback fuel comp,boost gauge, wideband and walbro so i may go ahead and get the thing fitted as il know my afr\'s and boost pressure and dont want to hit fuel cut.

or i might sell the apexi safc save up a bit an get a pfc..:yes

[L18M]

or i might sell the apexi safc save up a bit an get a pfc..:yes

just some warning, the AP eng pfc prices have gone through the roof! best to look for fd (92-95) pfc (£400-£450) and get a harness from banzai racing (about £100)