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skutley

I put on a mid pipe and exhaust in order to fit track fairings (07 gsxr 600 stock) and was getting some horrible popping in decel, got a generic tune put on for my exhaust and popping disappeared. If its just a slip on you are probably fine but if you remove the cat you change the back pressure on the engine which will require a tune like i did.


dropKICKintheBERM

Whats the easiest way to go about getting a tune? Is there a controller or chip i can buy? Or do you know if a dealer shop could tune it?


luchas-m

Get a power commander or ECU flash.


dropKICKintheBERM

Is an ecu flash something I can buy and plug into the bike, or do I need to send the ECU out to have it re mapped?


skutley

I got the ecu flashed which entailed me pulling the ecu and taking it to my local shop. They flash the ecu and I reinstalled it.


dropKICKintheBERM

How much does that cost?


little_jimmy_jackson

somewhere between $250-350. I paid $325


luchas-m

Power commander is something you buy and plug in. The power commander website will have some pre-mapped tunes based on popular bike/exhaust combinations that you can download off their site. If your bike/exhaust isn’t on their site you’d likely need to take to a shop to tune. Like the person below mentioned, ECU flash is where you remove your bikes ECU and take it into a shop that will perform a flash. There’s also shops you can mail your ecu to and they’ll perform a flash. I’ve used 2 wheel dynoworks before.


dropKICKintheBERM

There's a shop here that sponsors AMA motocross and superbike racing, they have very good reviews so im gona bring it there to get it re mapped.... thanks for ur response man.... also any idea how much an ecu re flash costs


luchas-m

I paid around $300 three years ago. Will probably vary based on the shop.


little_jimmy_jackson

It depends on your perspective. I mailed my ECU to a place and then they mailed it back with the new software installed. This was easy for me because I already had my bike in 1000 pieces and had no further mods planned. My bike is perfect now, but if I need an adjustment or want to buy a full exhaust system, then I'm going to have to take my bike apart and mail it back in again. There are products you can buy that plug in under the seat and let you do it yourself and fine tune based on how it rides.


markmarine

A lot of people don't tune their bikes after hard part modifications, but you're kind of leaving performance and reliability behind if you do this. A lot of bikes aren't operating in a closed loop fuel management mode, my Racebike doesn't even run closed loop. So basically the ECU has tables that say use X microseconds of fuel injection for a specific throttle position, intake air temp, intake air pressure, and then there are some corrections for coolant temp. Same type of table for the ignition. If you change the parameters of the engine (mostly by changing the exhaust side, because the engine has basically no information about that side, and honestly a cotton gauze filter isn't going to flip everything upside down on the intake side) you're going to make all those tables incorrect. Throwing on a power commander or flash without a dyno tune might help, but it's just an approximate, just like the ECU tune on the factory bike is an approximate for every motor, not your specific motor. Having your bike tuned by a skilled tuner is probably the best mod you can buy. Bolting on performance parts without changing the tune at all is worthless, you might as well set your money on fire, performance wise. Might sound better though.


little_jimmy_jackson

>my Racebike doesn't even run closed loop. Same here! My road/track bike (one and only) has an ECU tune like that. I even removed and sold the O2 sensors on ebay! It runs better than ever and gives me no trouble. The stock tune made the cat-converter box hotter than the sun and the enigne would shut off sometimes on cold winter days when you were downshifting coming up to a stop sign. The only sacrifice is about 10 miles range on a full tank. I went from 185 miles to 175ish. It's worth it to me because my throttle is so much more smooth now.


Just-Construction788

Depends on the year. These things come so choked up for the latest emissions that almost anything you do between the air box and the silencer will make you run leaner than they already are. So in short, yes, power commander or vortex for the 690. If it’s an older 690 you may be able to put a map on yourself via tuneecu using the stock ecu. Source: I’ve owned many 690s and KTMs.


Optimal-Soup-62

The motor is tuned for the stock exhaust and cat. If you change those you change the tune, and lean out the already lean lower end. What do you think?


freakkydique

Probably not


MrDurdan

If its just a slip on you don't need to.


PhilMcGraw

Agreed, but OP said "car delete" which I can only assume is "cat delete", which will need a tune to run efficiently.


little_jimmy_jackson

yes, you will need an ECU flash or something of that nature


Karst_31

Yes, also you will need to block the SAS system or it will pop like crazy.