Apex S-AFC II engine mgmt.

[silversleeper]

Couldn't this be acheived with just a simple A/F gauge installed?

[rwh11385]

no

how is a gauge which tells you if you are rich/lean going to solve the root of the problem?

without a wideband O2 sensor, which are expensive, that gauge is pretty worthless

dyno > street for finding the data you need



fuckin pay for dyno time, not a goddamn a/f gauge on a nearly stock NA car

[silversleeper]

no

how is a gauge which tells you if you are rich/lean going to solve the root of the problem?

without a wideband O2 sensor, which are expensive, that gauge is pretty worthless

dyno > street for finding the data you need



fuckin pay for dyno time, not a goddamn a/f gauge on a nearly stock NA car

at $60 for 3 pulls at the place about .5 miles away from my crib, I think I will do that. I have just never tinkered with the spring tensioner before, so I will practice fucking it up before bringing it in. I guess I'd better mark the stock alignment as well.

[Digitalwave]

Heeter is right. All you need to tune your setup, Wells, is an adjustable FPR. They are right around $100 from Flying Brick.

A piggyback computer for injectors and an M30 AFM is just silly. Thats a lot of money for almost 0 gain.

[rwh11385]

he already even has an adj FPR...

it's just after finding out throwing parts on the car without dynoeing isn't cool, he did the other r3v move, which is extreme overkill! yeah!

oh well. either markd chip tuned for m30 afm and injectors, or install that AFPR and dyno tune it easily.

[PeaveyBassist]

This is why I am gonna stay stock. Get stock injectors cleaned and get a MarkD chip and thats it.

Will

[Rob]

chip tuning is pretty lame IMHO (as is the 'its running lean, add bigger injector' school of thought), I much prefer actual real time tuning on a dyno.. SAFC is just fine, and made something like 7/7 with dyno tuning on a local kids m42. If you actually get on a dyno with a tuner who knows what he is doing, not some 20 year old whos dad bank rolled him a shop, then you can make some good gains. Also, some types of dynos can simulate load levels well enough that "highway dyno" tuning is completely unnecessary. Its all in who you get to do it.

fwiw- do as I say, not as I do; I cant afford to do much of any kind of tuning. Suits me well as my m42 w/ MarkD's magic runs great on the street and rollers.

[Bavarian3]

"chip tuning is pretty lame IMHO (as is the 'its running lean, add bigger injector' school of thought), I much prefer actual real time tuning on a dyno.. SAFC is just fine, and made something like 7/7 with dyno tuning on a local kids m42. If you actually get on a dyno with a tuner who knows what he is doing, not some 20 year old whos dad bank rolled him a shop, then you can make some good gains. Also, some types of dynos can simulate load levels well enough that "highway dyno" tuning is completely unnecessary. Its all in who you get to do it."

7hp and 7ftlbs... was that peak? How was the area under the curve? Did you always get a 7hp gain or was that a final run?

I agree with you in some points but a lot of people on here do not look for information above; all they want to see is 'peak' numbers...

You can make HP if you want but that doesn't mean it will run smooth at certain circumstances...

[rwh11385]

fwiw- do as I say, not as I do; I cant afford to do much of any kind of tuning. Suits me well as my m42 w/ MarkD's magic runs great on the street and rollers.

chip + dyno to check it and solve any issues that are present FTW. (like what happened to Jay with running lean). Not everyone is gonna benefit from piggy back and tuning time, but the other option is fully stock, and chipped is a lot more fun.



*cough* another thing to consider on the all whole subject is piggy backs are not allowed in prepared, but chips are... so yeah...

[Rob]

It was peak, our curves were nearly identical until the upper RPMs. I dont really consider the m42 an under the curve kind of motor anyways. For those folks who want absolutely ever ounce of HP/TQ their setup can make, a piggy back of some sort is ideal. For KISS folks, chips are fine. If RC wants to try it, I say go ahead, he doesnt seem to do much half assed (except the whole harness thing :P), and I'd be interested to see what happens. E36+bigger airflow+new software=big gains, maybe the m20 is the same way?

[rwh11385]

big gains.... m20.... ha

[Rob]

only in $50 increments though.

[rwh11385]

fucking classic. 8)


if anyone wants to make GOOD power with a m20, look at Alex's dyno. It's pretty sweet....and with an OTS chip.... Throw down for a STM6 or something, some dyno time, some experience... and who knows, a MAF.... !!

I would personally hate to throw down all the $$$$$ chasing marginal gains, but they add up as can be seen.

[Budget Beater]

Hey guys, FYI... been doing more research and it turns out you cannot use E36 TPS as i previously thought (believe me i test fit it and everything, not even close, wont work), You HAVE to use the E34 AUTOMATIC TPS sensor (pretty much direct fit). normally thye are like $150, but you can get them on ebay for $47 buy it now brand new. E34 AUTO TPS is the only one that does variable voltage (entire range) instead of the E30's regular off/on style switch. Just thought i'd help out anyone who is going to pursue it other than me. I plan on doing it within the next 2-3 weeks.