sj408

iTrader: (6)

.... who told you to not install a bov??? where does all the boost pressure relieve itself when you let off the gas?

99SC42

iTrader: (44)

You should get a bOV, it will save your Turbo!

My coworker run his MR2 without a BOV , i gave him one and he refused to use it ..

Ali SC3

iTrader: (10)

Its funny alot of the oldschool guys won't use them. you can run stock levels of boost without one and not hurt the turbo that bad, but to get max turbo life you need a bov. if you are on JDM twins, I would always use a bov. USDM twins are much sturdier in general.
you don't have to weld also if you go on ebay you can usually get an adapter pipe to mount your BOV, and it will connect like a regular intercooler pipe.

Ali SC3

iTrader: (10)

Oh I was doing some thinking about USDM GTE ecu's, and I was thinking those with a map ecu would be pretty nice because you can control larger injectors easier, and you will be getting the rid of the maf so a win win.
Although I think the JDM ecu and any piggyback is still a good option, if you use the USDM ECU you will not have to deal with the 110mph speed cut like the jdm ecu's have, the US one is at 155mph.

99SC42

iTrader: (44)

Ali please stop! haha I wanna use the map ecu on the USDM Ecu but there is no tuner locally .

What 02 sensor are you guys using? screw in type or bolt on type?

I wanna use the screw in type because i don't wanna ruin my $$$ DP.

briggs33

I got the wideband in. Running vvti coils and gte plugs. No check engine light. I ran it today and afrs were great on cruise and idle surprisingly. I thought I would be a little rich. Then when boosting it was staying up in the 14s which as I understand it I should be closer to 11-12 during boost. So I scaled back my fuel pulling and went wot once and right around Max boost the car stooped hard and afrs shot to 37!! So aftercruising for about 10 min and confident I didn't break anything I started trying to get afrs down fully in the 11s during boost without ever hitting max again.

Sound like fuel cut?

Ali SC3

iTrader: (10)

haha, I know I keep overthinking it but if you have a map ecu laying around and want to use it the USDM ecu seems like a slightly better choice then. tuning the map ecu can be tricky but I think they have good basemaps already.

I am using the screw in type, at first I got a universal denso 1 wire screw in type and used that.
now I am using a universal denso 4 wire screw in type, cause thats what the aristo uses but to be honest I didn't notice a whole lot of difference the 1 wire takes like an extra 30 seconds to start working and there was no CEL for odb1, so you can just use the 1 wire if you don't want to wire the 4 wire up.

aren't you glad you didn't pull more fuel and try it. 14's is not good, the ecu could have done a number of things especially if it picked up knock. generally, when you make changes to the safc, you reset the ecu before trying them out, making changes on the fly can do wierd things to the ecu because it still has trims stored for the old settings. reset ecu, get it down, and do some more checking. make sure the vac line to your map sensor is on very tight I even use a small zip tie on it, but be carefull not to crush the plastic nipple on the map sensor. also make sure you set the base timing back as directed on page 1.

lookEVO

iTrader: (1)

I prefer LOW 11 AFR's under full boost personally, I hit 10's sometimes for a second or 2 but I like that more than it going high.

Ali SC3

iTrader: (10)

maybe its the aftermarket 440's I have but mine reads a solid 10 in boost so I clearly need to install a boost cut controller on there and turn up the boost till I get that down to 11's. lookevo how much psi are you running?

spoolxexo

iTrader: (4)

C'mon Bud, you don't need to hire someone to tickle the keys on every ems.

93 octane, 15-18 degrees timing, 10.8:1 AFR and drive it like a teenager, easy!

lookEVO

iTrader: (1)

I hit 12 psi for a few and then level to 10.5-11.

I havent really been boosting since my trans is wearing out. Dont wanna get stuck somewhere. Lol

Ali SC3

iTrader: (10)

Thats good power for 12 psi especially at this altitude. yeah the trans can really hold the fun back, I have a w58 so I haven't been that excited to turn the boost up much more and see if it breaks but its still holding at 14psi.

lookEVO

iTrader: (1)

I dynoed it at only 10... the wastegate seems to work better now. I dont know that it makes much more now but it feels a bit faster than it did originally.

99SC42

iTrader: (44)

I know, i know !!! if it was aem i would mess with it myself first, because i have been using aem for 5years or more and i know how setup a new map .

I don't wanna mess with it since it's my first time , i have never used a piggyback in life, nor wired up an safc .

spoolxexo

iTrader: (4)

Every one take notes!

700whp never an AFC!