I installed an AEM boost controller but having very bad spiking issues and now every time i get on it, the service engine light comes on. I spoke to my tuner and he said the only way to resolve this was to use the Blitz i colour or the HKS. I wanted to know if anyone has these controllers and if they are having the problem with their MR?
ALso when a boost controller is installed my bov is fluttering badly, again my tuner said there is no way to fix this but i was wondering if anyone has any ideas as it's very annoying? I assume the problem lies with the MR because there is 2 boost controllers bilt into the car as stock, i would also assume this problem exists becasue of the increase in air pressure, hence the fluttering bov.

Can anybody help me with this or advise?

 

ive got a ams boost controler in my mr and i have no such issues, did u check all your vac hoses maybee somthing is hooked up wrong? Just a thought

 

oh i almost forgot i get some fluttering b/c of my intake (ams intake) i think, it hapend before i installed the boost controller tho.

 

A local guy here had the same problems with a perrin inline mbc. His boost was spiking to 28psi. His cel kept coming on and put the car into limp mode. He had so many issues he put the stock boost control stuff back on until some tuning software becomes available. He hasn't had a problem since.

 

Is the AEM an electronic boost controller ?
It can't be that difficult to adjust .. you may just need to lower the gain abit ..

with an aftermarket intake .. you have to be spiking VERY high to trigger an overboost .. > 26psi

If you run 22-23psi .. you should have no problems .. until 5th and 6th gear

 

The AEM is an ebc, but only has the one solenoid where as the MR needs two i believe, i have just ordered a blitz i colour and gonna get that tuned. if this doesnt work i may have to just turn it off until someone figures something out. You guys know much about the blitz i color? i wanted to stay away from MBC but i may consider it now.

 

The Forge UNOS manual boost controller available from us has not caused any problems in any Evo X's we have tuned.

It is available by clicking HERE

 

Solenoid is just the means to control the boost ..

1 solenoid with a fast processor works just as good but with slower response ..

HKS has no solenoids .. it uses stepper motor .. yet it is used on the EVO X ..

All the later evos run 2 solenoids from the factory .. and these are FACTORY controlled boost .. so if you go EBC .. you don't NEED TO USE the factory solenoids anymore .. so it doesn't matter how many solenoids you originally have

 

But surely a controller with twin solenoids will be able to handle the boost slightly better. Are you familiar with the spiking issues i'm talking about? I worry about blowing my motor as the boost spikes to 31 psi when it's set to 23. sometimes it will hit 24.5. what do you suggest i do?

 

The AEM is good controller but the blitz is awesome... cant wait to get it in. Does anyone have any opinions on the blitx svc i color?

 

It is all a matter of how you set it up .. I'm quite sure AEM probably is good ..

I'll say you spike to 31psi when you shift
that was the reason I stayed off EBC this time round ..

On the Auto, when you shift .. there will be a momentary overboost as the engine attempts to keep power but disengages and shift at the same time ..

If you set your EBC to 21-22psi .. and lower the gain you should be fine ..

I've used icolor before .. if you don't set it up correctly you'll still get this problem ..

Don't get me wrong .. I love my icolor .. but I just couldn't use it on the X because of alot of issues .. yours being one of them .. not to mention part throttle overboost etcetc ..

I ended up using the stock boost controller to control the boost

 

As long as i take it to a tuner? (AMS) they should set it up fine. Do you think the icolo was a good idea? Are you saing i will always have an overboost problem? you think the motor will blow?

 

Who installed it?

 

not installed yet, but ams will install it and re tune me.

 

Should .. but its familiarity with the unit ..

Nothing wrong with any you've chosen .. just don't set the boost too high ..
If you used to spike to 23psi .. you cannot set 23psi as your boost anymore .. you have to set lower .. EBC allows you to set a pretty consistent boost level across the rpm band whereas the stock boost peaks at 23psi and tapers downwards

If you set 23psi as your baseline, then when you shift you will spike higher than that ..

Momentary spikes should be ok .. and there's alot of safeties built into the ecu .. you'll hit limp mode before the engine blows ..