Sport Compact Car magazine

[AAMguy]

Exactly, people are trying to get away with doing this improperly. Put that motec they had in their m3 on a ms3 and you would be laughing.

i agree yet the motec is a b**** to tune and there are only a handful of people that are very experienced in tuning it (or at least that I would trust) and i know 2 of them charge an outrageous amount of money

1.for the tune
2.for a flight to where you are

 

[Hambino]

good points but you dont figure that superior atomization of fuel plays any part in detonation resistance/knock threshold?

Perhaps once going WOT at in a drag race at high cfm levels its not as noticeable, but what about the sections of road in between on the road course?

Won't even make the slightest of difference. How much the driver's shoes weigh will play a bigger factor.

 

[jeffmsp]

When I place my additional injectors 2inch or 4inch from the primaries it makes little to no difference since they only activate under high cfm conditions, but you would think with a DISI system it would make a difference especially if you were able to manage individual cylinder timing and afs. Wish I had one so I could find out myself.

 

[jeffmsp]

i agree yet the motec is a b**** to tune and there are only a handful of people that are very experienced in tuning it (or at least that I would trust) and i know 2 of them charge an outrageous amount of money

1.for the tune
2.for a flight to where you are

Luckily 4 me Im near someone too bad my lack of funds means Ill never have a chance to exploit it.

 

[Hambino]

When I place my additional injectors 2inch or 4inch from the primaries it makes little to no difference since they only activate under high cfm conditions, but you would think with a DISI system it would make a difference especially if you were able to manage individual cylinder timing and afs. Wish I had one so I could find out myself.

Yeah I hear ya for sure. The DISI system had a lot of promise for sure. I know I was excited for it when it first hit the scene. I was considering even picking up an MS3 at the time. However, after watching some decent builds it just didn't seem to make a difference. I think it's a great set-up for bolt-on's and such, but when it comes to 400+ HP applications, the novelty wears off and just becomes a pita to work with. We'll see where they go with the new platform, hopefully they'll make it easier to work with as a whole.

 

[jeffmsp]

why not just use a fcd to keep the stock airflow meter and fuel system from maxing out and then rig 4 additional injectors up to a fuel controller to handle additional fueling? Cheapest and easiest way to handle the problem I would think. Works great for me Cost is minimal and you can supply more fuel than the engine can take for a very small initial investment. I even used analog controls on my first controller box, cost me less than $100 to build the controller, reused stock rail and injectors from my first fsdet, easily made mounting brackets and ran fuel lines from the rail to injectors. The switch to digital injection on the secondaries hardly makes a difference once you get a good tune worked out with the tuning pots as the engine is flowing enough cfm at high load/rpm that mixing the air and fuel is not an issue.

That way you get the pros of the 2.3 disi with none of the cons of the stock fuel system. If you are inclined to electronics the ordeal should cost you less than a good pair of shoes.

 

[Hambino]

why not just use a fcd to keep the stock airflow meter and fuel system from maxing out and then rig 4 additional injectors up to a fuel controller to handle additional fueling? Cheapest and easiest way to handle the problem I would think. Works great for me Cost is minimal and you can supply more fuel than the engine can take for a very small initial investment. I even used analog controls on my first controller box, cost me less than $100 to build the controller, reused stock rail and injectors from my first fsdet, easily made mounting brackets and ran fuel lines from the rail to injectors. The switch to digital injection on the secondaries hardly makes a difference once you get a good tune worked out with the tuning pots as the engine is flowing enough cfm at high load/rpm that mixing the air and fuel is not an issue.

That way you get the pros of the 2.3 disi with none of the cons of the stock fuel system. If you are inclined to electronics the ordeal should cost you less than a good pair of shoes.

Well for "everyday" tuning applications this works. Even Kooldino runs an additional rail with 4 larger injectors on it when he needs the fuel. When it comes to 400hp+ race applications, it doesn't really cut it. These guys want a specific set of injectors for a specific purpose. They don't need to worry about a safe daily tune. They want to be able to make smiley faced spray patterns with their injectors. Keep in mind, we're also comparing stand-alone cars to cars running on stock ecu's with FCD's or piggybacks. Every car, regardless of factory equipment, gets to a certain point with power and purpose that things have to be done the "right" way.

 

[builthatch]

this thread is so ridiculous....

why anyone came into this thread waving an EVO X flag and throwing burning spears, i don't know. don't the mods here keep anything on topic in his mazdaspeed3 subforum?

keeping in the theme of off-topic, if you really want to know what EVO platform is better...call the proprietors of some of the big DSM tuning outlets, the guys who make a difference, like Jeff Hill at Turbotrix, and poll them all about which platform is more promising, or which engine has more potential.

if you call them all, and most say one thing, then you have your answer.

these guys on the internet can have their opinion, but just make the phone calls and ask the people who definitively know. it's what was done before the internet, and it still is what to do- poll the experts, not some synthetic eletronic corkboard with mystery people pressing keys.

 

[Hambino]

this thread is so ridiculous....

why anyone came into this thread waving an EVO X flag and throwing burning spears, i don't know. don't the mods here keep anything on topic in his mazdaspeed3 subforum?

keeping in the theme of off-topic, if you really want to know what EVO platform is better...call the proprietors of some of the big DSM tuning outlets, the guys who make a difference, like Jeff Hill at Turbotrix, and poll them all about which platform is more promising, or which engine has more potential.

if you call them all, and most say one thing, then you have your answer.

these guys on the internet can have their opinion, but just make the phone calls and ask the people who definitively know. it's what was done before the internet, and it still is what to do- poll the experts, not some synthetic eletronic corkboard with mystery people pressing keys.

Sure, call them all. If they have an Evo X, they'll be singing the 4B11T gospel. I know because I'm on a forum with them. Pound for pound, the 4G63 has been eclipsed.

 

[jeffmsp]

http://www.youtube.com/watch?v=MkCHsX-pPhA

looks like hiboost has no problems working with the disi system...stock internals 477whp. too bad they didnt have a car at that shootout, though from what ive heard from other forum members if they were in the contest they would have been late by months lol jk

 

[Hambino]

http://www.youtube.com/watch?v=MkCHsX-pPhA

looks like hiboost has no problems working with the disi system...stock internals 477whp. too bad they didnt have a car at that shootout, though from what ive heard from other forum members if they were in the contest they would have been late by months lol jk

Yeah they're running a built motor with a substantial amount of boost. This can be done with literally any motor. To be honest, no amount of power or engineering was going to put an FF Mazda near the top of the USCC.

 

[jeffmsp]

i dont anything anything fwd could make the top of the list, but it would have made things more interesting. not to knock tripoint in any way, everyone knows they are great. maybe next scc shootout they will have a ms6 or turbo rotary at least.

 

[SuperStretch18]

...maybe next scc shootout they will have a ms6 or turbo rotary at least.

They're closing shop...
http://www.mazdas247.com/forum/showthread.php?t=123726156

 

[ericrapp]

I have just caught up on this discussion. I appreciated the reasonable dialogue. Thanks gentlemen. It seems most of you fellows are in touch with the current state of tuning and the MazdaSpeed 3. And SportCompactCar will be missed i think.