no more mazdaspeed cams!?

[Installshield 2]

ok...sounds good...your goal is reachable, and there are different options on how to gain the 50whp while still staying NA...But 50whp will not be too cheap, you will need to save a decent amount of cash in order to get the proper mods needed...

Basically expect around 30whp with a 60mm or so cat-back exhaust, AWR header, J-spec intake cam/MSP exhaust cam, and an intake...Those numbers can get very different depending on the dyno used, but it will be 100% noticable to the you the driver...

all of those upgrades can be considered "bolt-ons", and after that things will get a little more expensive for each individual mod (minus pullies, or flywheels...but the power gains are more or less only in 1st and 2nd gear)...Internal engine work, head work, intake manifold mods and others will be needed for more power...But a single properly tuned standalone ECU will most likely double the original 30whp gain to almost 60whp...But one of those will set you back at least 1 grand for the unit itself...let alone dyno time and others...Just let us know how involved you plan on getting...If you break this down over a few years, the 2000 dollars invested shouldn't be too much of an issue...

 

[ProtegeSpeed]

so even after i do my exhaust/intake/header/cams the simple bolt ons will i need to dyno it??

 

[SFC01v2]

oh ic.. well iam going all out NA headers intake exhaust manifold cams (still dont know all about NA moding hopeing ill learn from u guys) i dont wanna spend TO much money lam hoping for a 50 whp maybe i dunno around there. any suggestions would be nice thanks

Punctuation? (shrug)

 

[ProtegeSpeed]

come on now dont be TO picky its 3 am over here

 

[SFC01v2]

Fair 'nuff

 

[twilightprotege]

you dont need to dyno it at all. if you are just doing straight bolt ons like exhaust cams etc that dont require tuning, no need unless you want to know how you're going. if there is something like cam gears that need tuning, dyno time is essential

 

[SFC01v2]

How far can you go in terms of improved breathing before you max out on the factory maps though? That is something that I have always wondered.

 

[twilightprotege]

dont know. the good thing in that respect is that the engine runs very rich to start off with so there is plenty of room to lean that out

 

[SFC01v2]

I suppose a fair indication as to how far the factory maps extend would be the upper limit signal from the MAF. You'd think that they would have extrapolated out that far wouldn't you?

That said how far in terms of equivalent hp flow can the OE MAF go?

 

[twilightprotege]

perfworks is probably a good person to answer that

 

[akhilleus]

interesting thread...more NA people...i like... oh for custom cams this is what i would suggest
intake: 210-215deg duration .344-.350 lift (basically a j-spec intake or a slightly modded one)
exhaust: 212-218 deg duration .344-.350 lift. this would have to be custom cause... the "mazdaspeed" exhaust cam is 198 deg duration .344 lift.
this would be especially nice if u have an exhaust and since most "modded" cars have their exhaust more worked then intake it makes some sense...also the cams are heavy on the exhaust side duration wise so why not keep it that way but with more lift. A larger ThrottleBody (corksport, autoexe) would be good too since the car is already rich and would be a basic bolt-on intake wise.

 

[Installshield 2]

I don't think anyone is going to "max" out the stock MAF with mild NA tuning...Theoretically I think the the MAF housing would become too much of a restriction, before you actually reach the point where you are flowing so much air that it can't read it...but in either case the stock ECU is restrictive...Even with the minor bolt-ons, better computer tuning will yield large increases in power...

Everyone one of the ECU guys you talk to will usually mention that the stock ECU is decent at excepting mild changes...So you don't run into the ECU physically rejecting the bolt-ons or cam work...But it never will allow maximum output...The fuel maps are scaled pretty big, and have a decent amount of resolution...But it is kind of irrelevant in that the car will be running for safety in some cases, and for emissions in others...So even though it has the resolution to deal with large amounts of air coming in, and dumping large amounts of fuel...it doesn't "zero in" on the proper maps for power...