yea....yea...its another one of these threads.

I have heard that the stock ecu runs different maps based on differnt conditions, if so, when you get your ecu reflashed, does the ecu still switch between maps or does it run only on the one your tuner uploaded? The problem with running on one map is that the ecu will not adjust boost pressure when its really cold leading to over-boosting. or am I wrong?

 

ur wrong, the temp fluctuations and all that nitty gritty stay put, it'll dynamically change like a normal ECU, it'll just hold boost a little longer and the afrs will be a little leaner. . .

 

If the ECU controls boost, you won't have to worry about overboosting in the cold weather, but if you had an MBC, then yeah...

 

Boost cut...

 

I just had my car tuned not too long ago, the day car was tuned was around 50's, few days later when the temp drop to 20's my car overboosted, what I did was turn down the boost on my car to prevent boost spike. As the weather becomes warmer I turn the boost back up.

 

It all depends on your tuner. Again.....RESEARCH, research, research.

I remember reading earlier than certain tuners with the IX only tune the main map. That lets the car utilize one of the 'lower/safer' type of maps if the needs comes. The need could be temp changes, bad gas, etc.

Some tuners... and I won't name them (research) don't tune for this.

I've said it many times, I don't like the idea of an MBC/EBC personally. I don't understand the reason to 'trick' the ecu, but that's just my .02.

 

you guys are missing his question, he's talking about the ECU and MAPS.

This has NOTHING to do with MBC's or EBC's, I'm not a big fan of those at all and would recommend running WORKS instead that controls the boost via the ECU so you wouldn't overboost in different temp situations. . .

A flash WILL allow you to run stock boost levels LONGER throughout the powerband so you get rid of that 4k hiccup that feels like you've just hit a wall. . . running an MBC will allow you to bypass that taper all together, OR you can get a WORKS flash with their proprietary boost hose lines that'll hold boost until redline via the ECU. . .

Before someone jumps down my throat about WORKS pricing consider the fact that a normal flash will run you anywhere from $200-500, then consider the MBC of about $100-150 on top of that. . .the WORKS flash works out cheaper than a custom flash and MBC.

I'm not running anything right now since I can barely handle my car stock. . .it came strong from the factory. . .hehe.

 

He was talking about overboosting with the ECU controlling boost. I just simply stated that its not likely with the ECU controlling boost, but very likely with an MBC.

And BTW, Works isn't the only one who offers that propietary boost line to hold boost longer, and still manages to come out cheaper than the Works flash all while getting a custom tune.

 

Works doesn't use an MBC; true. Vishnu or AMS, using the Ecutek flash software don't use an MBC either - give him the whole story.

Works is pretty conservative with their tunes, and are mostly a mail-in flash company - and I think that hurts them. I had their P2 product on my 03 Evo, so I know what I'm talking about.

If you're talking cost, you have to factor in tuning. A mail-in flash will be cheaper, no doubt, because there's no custom dynotime spent tuning it. On the flip-side, this is where you leave power on the table and potentially reach safety issues if you're not running all the needed extra parts (ala upgraded fuel pump with dynoflash).

 

What I really wanted to know was whether having the ecu reflashed would make it lose its ability to adjust boost/afr in differnt temperatures and driving conditions. Where i live, temperatures can run from 20-100 F so I was wondering if i can potentially harm my engine with a reflash

 

With a competent tune and tuner your answer is no.

 

The WORKS Brain Flash will maintain the ECUs ability to switch maps in varying conditions so you won't have to worry about fluctuations in weather, altitude, etc... As mentioned our P2 flash will also give retain the ECUs ability to control boost--only better

 

As does anyone elses flash. It is up to the reflasher NOT to tune high and low octane maps the same. It is also their responsibility.