"that matches your car, i.e., if you have a cat or a bypass"

Like that makes a real difference, not!

It really DOES bug you. Does it make sense that a modified setup might benefit from a modified EPROM? The '89 DME version is for a stock '89 motor. It would no longer be appropriate if mods like camshaft, twin-plugs, modified TB, headers, cat bypass or other exhaust changes were present. Don't tell me; you offer upgrades to the 8k 1989 DME version.

Getting Chippy?
 

Have neither but after having read all threads and comments on this topic it appears that there are a lot of folks with either agreat imagination after just getting a "placebo" chip from SW, ... drinking the coolaid, or that the chips do what they say they do. Furthermore, it also appears that the SW chips are more adaptable to your needs than a onesize fits all product that is advertised to be the final fix as it were....

Can one not just humbley say that both products provide benefits? Oh wait, there really is only one way to skin a cat....

chip
 

I would like to see engine knock info first...anyone can advance timing and increase fuel

When one looks at the maps,..then on to the dyno waveforms,...one would certainly see a difference...I do believe this "difference" to be a quantifiable......

However, I'm not so sure about things such as raising the rev limits or advancing the hell out of the timing (of course, not all chips do these things) without some way to monitor what the hey is going down (i.e. "knock sensing").

I will say that the ones I've driven (chipped) certainly have a degree of improvement of performance (response) in the partial throttle range.

As Yaz stated, they all "do their own thing" (paraphrased),..including the stock thing.....

I, too, have read all of these chip threads,..seen the dyno data,..listened to Steve,..listened to Warren,.....the whole 9 yards. Had a great telephone conversation with Steve W. long ago. I was VERY impressed with the conversation,..as he listened to my questions and was completely ready to NOT dick with any parameters I didn't want dicked with,..and wasn't a "dick" about it, at all.....

I hear ya', YAZ!!!!! (never seen much humbleness going around....)

Hope you're doing well!

BEST!

Doyle

If any one is interested I have a fabspeed cat bypass and a fabspeed one in two out muffler for 700.00 bills used for about a year. I also have a SW chip for 200.00 it was on a 87 3.2 24 pin chip

"It would no longer be appropriate if mods like camshaft, twin-plugs, modified TB, headers, cat bypass or other exhaust changes were present."

Hardly the same as a minor change like a CAT bypass!!!!!!!!!!!!

So how much would it be for a full '89 DME conversion, versus the cost of a SW chip? And has anyone actually done such a conversion on their '84-'88?

I've driven my '86 without and with the SW chip, but my experience along with all the others, would be merely anecdotal...

:p

It's just one jumper moved and one jumper created to move from 2K to 8K or one jumper created to go 4K to 8K and an 8K chip.

I understood that the final software was in 1988 and 1989 models right?? Not just 1989.

"I understood that the final software was in 1988 and 1989 models right??"

That is correct.

"Porsche went to the 8K EPROM to include much better operating parameters and
better driveability than was in the early 2K/4K EPROMs ('84-'87)."

"So how much would it be for a full '89 DME conversion, versus the cost of a SW chip?"

"It's unfortunate that many waste their money on so-called 'performance' chips.
When for the same cost, the DME ECM can be ungraded to the lastest 911 3.2 DME ECM chip
(8K - 28 pin). Besides the EPROM upgrade, the DME ECM could be easily modified at the same
time to prevent future typical intermittent running problems at no additional cost."

Could/would someone note "what" those final changes were?

Thanks,

Doyle

Couldn't help myself....to the OP (Rainking) and everyone else who has contributed to this thread, please view the links to get an idea of where this thing is probably headed. Same schitt, different flies.

http://forums.pelicanparts.com/porsche-911-technical-forum/368113-chips.html

http://forums.pelicanparts.com/porsche-911-technical-forum/360035-who-has-advanced-their-timing-more-power.html

http://forums.pelicanparts.com/porsche-911-technical-forum/372582-911max-911-tuning-has-begun.html

Indeed, loren is not known for his constructive advice when it comes to chips...
Unless you call bad mouthing constructive advice...

I've had one of Steve's chips in my car for years now, with zero issues.
Unless you call improved driveability, smooth idling, more power and a grin from left to right issues....

"Indeed, loren is not known for his constructive advice when it comes to chips...
Unless you call bad mouthing constructive advice..."

As always, when the issue can't be addressed, then the personal attacks come, right?
But what do you expect from the typical brain-dead poster who repeats what's posted
on the internet without any concept of the real issue and re-posts it!

Bottom line: Lemmings will always be found sucking-up bandwidth on the internet posting hyperbole.

One thing is clear here: Lorenfb will not find HIS lemmings here :-)

I bought a SW chip for my 1989 3.2 and I particularly feel the better driveablility / better torque at lower RPM. You will however miss the kick in the butt at 4.000 because it already pulls better way before that point. Also idle is substantially better.

When I opened my MDE, I found the older version 24 pin chip.
Probably the DME unit had been swapped by a previous owner. I modified it like mentioned in this thread with instructions from Steve. Great support from him here. Mod is a piece of cake with one / two jumers; then installed the 28 pin chip.

How much more real world performance does the pre muffler add to the chip??? I am on the fence on getting the chip and the pre muffler. I am in Pa so I dont think smog testing is gonna be a issue.

Are there any issues with engine knock after installing a performance chip?

To my understanding, a large part of the SW gain is from adjusted mixture at lower rpm.
I have had no knock issues.

I specifically ordered a SW chip to run 1 grade lower octane fuel (RON95 instead of 98) in my high compression EU engine. Worked fine so far, also at high speeds in Germany :-)