Dinan vs. JC chips

[Brew]

el oh el.

If I were to thow on a chip on an eta, can I just expect a few hp? Could it change the rpms enough to make it use the engine a little more then an average eta would?

A good chip (JC) for your eta would make a very noticeable difference.

[nando]

or the other 30 times i've worked on cars in the past week at my shop job... i think i know my shit, i dont knwo anyone who unplugs their battery to swap a chip.

you also don't know anyone who uses a torque wrench to put their wheels on, and look where that got you. sorry dan...

[DanGillan]

or the other 30 times i've worked on cars in the past week at my shop job... i think i know my shit, i dont knwo anyone who unplugs their battery to swap a chip.

you also don't know anyone who uses a torque wrench to put their wheels on, and look where that got you. sorry dan...

ok, that was before shop job started.... i knew it was better but didnt have the tools, lets get over this.... seriously...

[BlackE30]

I have a bav auto chip, I didnt really notice anything but there was a slight gain in the upper rpms from around 4,200 or so to redline. I would only buy a chip if you can find a good deal on one. I got mine brand new for 110 shipped.

[MarkD]

I have a bav auto chip, I didnt really notice anything but there was a slight gain in the upper rpms from around 4,200 or so to redline. I would only buy a chip if you can find a good deal on one. I got mine brand new for 110 shipped.

Well I can't offer you one for $110, but then you didn't notice a difference with that chip. Ask Rob Heeter if he likes the 93 octane chip he recently bought. I can arrange a group buy if some of you are interested.

MarkD

[rwh11385]

Whoa, I kinda noticed how I used to not be able to kick the rear out as easily in the dry.....but now I can. :twisted:

And when cruising in 2nd @ 20-25.....it's a whole lot easier to smash it and get up to 4K or so.....where the real fun starts. Before, it was slower to react.

http://www.r3vlimited.com/phpBB2/viewtopic.php?t=12728

[brodee]

thats well within the error for the dyno ain't it?

Yes it is, but with everyone telling me that the JC chips are SO much better than Dinan I didn't expect them to be this close.

With the Dinan chip in my car I couldnt tell any difference what so ever (besides increased redline)

Actually after installing the JC chip it FELT much faster, but the dyno proved that feeling wrong. I've come to not trust the butt dyno over the years, I like the real proof.

Still, the Dinan was tuned for WOT, so the peak #'s might not be that different, but the partial throttle is very different between the chips, but I wouldn't be surprised when the dyno comes back right to see the JC a better chip overall.

Actually the JC chip was below the Dinan across the board. It stayed fairly even just lower at all rpm.

how long did you give the ECU to recalibrate? when you first start it after swapping chips (and disconnecting the battery, rriiight!?), the ECU starts out with a default map and tunes from there.

As stated it was in there for 8 days, including about 280 miles and an autocross, so I think it was sufficiently mapped. Also, yes, I disconnected the battery first, I always do before electrical work, doesn't take that long.

back to back plots would be much more accurate, IMHO

Me too, that's why I will be running them, as stated.

Well I can't offer you one for $110, but then you didn't notice a difference with that chip. Ask Rob Heeter if he likes the 93 octane chip he recently bought. I can arrange a group buy if some of you are interested.

MarkD

I plan on getting one of Mark's chip for my car once I get the rest of things ironed out.

[Rob]

dynoing mods :up:

rob not reading :down:

[rwh11385]

rwh11385 wrote:
Still, the Dinan was tuned for WOT, so the peak #'s might not be that different, but the partial throttle is very different between the chips, but I wouldn't be surprised when the dyno comes back right to see the JC a better chip overall.


Actually the JC chip was below the Dinan across the board. It stayed fairly even just lower at all rpm.

Not the rev range below peak, but rather the power at partial throttle....which wouldn't be tested on a dyno.

The mapping for JC and Dinan should be somewhat similar at WOT, but what's good about JC (and Mark D) is the advanced timing and shit at partial throttle, so you have a power increase when not completely gunning it.

Also, if your engine is not tuned properly, it won't be making the power it should be. The tune of the engine, and the maintence that needs to be done or fixed is as important as the mods sometimes.

If the JC chip changed up the mapping or fuel or something from the Dinan and the engine is not running quite right.....it will not be making the power it should, at peak, or elsewhere. If you get the A/F ratio worked out, then hopefully the power will be better at peak, as well as across the board.

Well, that's what I can try to say with the limits of what I really know, but hopefully that is pretty correct.

[Rob]

i'm just glad people are actually dynoing instead of assuming what 'feels' fast

[brodee]

i'm just glad people are actually dynoing instead of assuming what 'feels' fast

I'm going to start using my g-tech to test against the dyno also. I know it isn't as acurate as a dyno, but it is consistant so I can make smaller changes and see if what they are doing in between dyno runs.

I'm also lucky to have a great BMW show here with a dyno. For anyone in or around Houston I would recomend you making a trip to http://www.bavhypersports.com/ and talking to Joel. He's been a huge help working with me on all this.

[Rob]

dynojet?

[brodee]

dynojet?

Yes Dynojet 248c

[Den]

Horsepower sells, so the manufacturers get all they can using far more advanced technology than any little company could ever dream of.

Manufacturers also have a world of issues to worry about, like CAFE, fuel quality, and idiot customers.

80's era BMW's were detuned a bit for the US market. This doesn't mean that a chip will make one run like a Euro car; they also has no cats and a higher compression ratio in many models. An extreme example would be the M30 in the E28 535i. 182hp in US trim. ~210hp in Euro trim. Anyhow, the point is that manufacturers do not always give you as much power as they could just because it would sell more cars.

[Den]

Well I can't offer you one for $110, but then you didn't notice a difference with that chip. Ask Rob Heeter if he likes the 93 octane chip he recently bought. I can arrange a group buy if some of you are interested.

MarkD

Yes, let's talk about that.