were do i stand (boost)

[rising son]

right as  said in my last boost thread im only getting 5-6 psi,
the last owner sold me the car saying the ecu had a stage 1 chip, and yes it does.... trouble is the chip is in the glove box and aint been fitted  
now hes telling me that the boost cant be turned up past 7psi without buying his fuel cut defender :rolleyes: ... surely it can go past 7psi without 1 of those
for the record the mods are
stage 1 chip fitted in the glove box
de-cat
full kakimoto racing system from turbo back
boost controller
bov....
driver slowly going insane

[dthebuk]

standard boost is 0.45 bar. If you go 1 psi above this then fuel cut will kick in (you dont want that). Generally "stage one chips" have a map for a fmic, full through exhuast and air filter. They are usually mapped up to 0.9 bar which is where the stock set up starts to max out. The chips also tend to remove the fuel cut and rev limit.

If you\'ve got a turbo back system 3 inch or bigger you should in theory be getting boost creep, ie too much boost. However your bov could be leaking and thus stopping this, or your wastegate may have been ported to deal with the exhuast.

When does the turbo start spooling and when do you hit full boost?

[B.Martin]

driver slowly going insane

Welcome to Rotary engine ownership, we\'re all officially certified skitzophrenic! :Giggle

Someone will be along soon to point you in the right direction, I\'m still trying to get the hang of it like you

[rising son]

When does the turbo start spooling and when do you hit full boost?

sorry shud have said i have an apexi filter aswell
as for spool, i cant give u figures from memory, i can say there is a bit of lag but when it kicks in its in fool boost almost instantly

[rising son]

so if i buy a fuel cut defender am i ok/safe to turn the boost up a bit ?

[dthebuk]

If you\'ve got a chipped ecu you shouldn\'t need the fcd.

[rising son]

read my first post bud.. ive got a chip and an ecu .. but they aint together

[milez]

put them together then dude. Then you shouldnt need a fcd

[rising son]

av never done it before mate, never even used a solderer... or i would

[dthebuk]

take it to someone that can, a chip is much better than an fcd.

[rising son]

right that kinda answers my question then thanks... ill probs buy another chip as i dont know what this 1 is, the guy said stage 1 but dont think id be comfrtable doing it... why did he not fit it...., are these ebay ones any good? http://www.ebay.co.uk/itm/MAZDA-RX7-TURBO-II-STAGE-1-CHIP-N374-FC3S-13BT-FC-FC3C-/290495440863?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item43a2e0a7df

[B.Martin]

Keep an eye on eBay for a chipped ecu, I managed to get my blitz access one pretty cheap. There is a thread by Yuigi in the parts for sale, he had 2 I think it\'s worth seeing of he has 1 left:

[grinder]

just thinking off the top of my head

1 - you are defo running a full decat ? ( down pipe and centre )
2 - what is your boost controller set to ?
3 - how are you measuring boost ?

with a full decat and cone filter you will hit boost/fuel cut at .45bar ( as some one said )

Sticking on a FCD will allow you to boost to .9 bar

as it fools the ecu into thinking that its running lower boost levels etc..

in reference to the ecu chip - you could remove your ecu and take it to a tv place ( or such like ) and see how much it would be for them to solder in the mount and the stick the chip in

but at the listing says - its designed for a after market intercooler

i have run a lot of my fc\'s with a full decat , cone filter and fcd and they have run at .9 bar all day long without any damage ( im not saying its 100% safe - its just what i have done )

Stu

[rising son]

1- yes
2- id imagine 6psi
3- apexi aftermarket guage
 
cheers for the usefull answer, sets my mind straight, right the boy is going to sell me his knight sport FCD (hopefully this is a decent 1) so with the full decat and cone i should be able to safely increase boost to around 12psi ? (just under 0.9 bar)
or would an uprated fuel pump be needed first

[dthebuk]

Uprated fuel pump shouldn\'t be needed. But if you\'re running 0.9 bar I\'d suggest you rewire the fuel pump for reliability, there is a guide on here somewhere, and make sure you\'re fuel filters/injectors are in good nick