I've been discretely testing out some NA chips with various users out there. Here's a recent thread on this topic with those users' feedback: computer experts, and NA chips questions...

I think I'm close to releasing the GURU 944NA chip. It will come with a toggle swtich to select between the stock vs. GURU maps so you can use street gas. I'm going to have to give Skip another chip revision since he's got the rare 2.7L engine.

 

Danno, will the install be painful on the early motronics (as it is with other chips - IMHO)?

 

go with the Wilks chips..he is a great guy I have been buying his chips for a few years now.
I think they make a difference!!! who cares if it is 5 hp remember you only have 147 hp to start with...it is like a 3% increase not bad for a few hundred buck

 

My brother's '84 NA has an Autothority chip in it...it's definately got some extra go over the other non-chipped NAs I've driven. Is it worth $400? Probably not. But if you can get a chip for cheap you will notice a difference. You're not going for record HP numbers in an NA anyways, so if you can feel it is what matters more IMHO.

 

I have a used chip that I will sell you for $50. Dropped my 50-70 times in 4th gear by a little over .4 seconds. Definately made a difference in the mid range. Let me know if you are interested.

 

Hey- if you dont sell it hit me up with a PM

 

I got mine at dealer cost, which was about $250. It's nice knowing someone who works for them. I'll have to say that I definately noticed a difference, too, and my friend did confirm that the 14 hp increase is genuine. For whatever that's worth...

But in the end, I do feel that it was a worthwhile $250 spent. Is it worth $400? I don't know... Normally, I'd say "no", but considering how hard it is to get power out of these cars otherwise, well, I'm not sure what other choices you really have...

BB.

 

"Danno, will the install be painful on the early motronics (as it is with other chips - IMHO)?"

This will only be available to '85.5+ cars. The early cars can be converted to a socketed chip, but the mappings will still have the tables in a different location, so the chip won't work.

"I'll have to say that I definately noticed a difference, too, and my friend did confirm that the 14 hp increase is genuine. For whatever that's worth... "

It's worth $1000 to me for the dyno-chart of that 125rwhp increase to 139rwhp with only a chip-upgrade.

 

Meh, I think he said it was at the flywheel...

In any event, I trust the guy to tell me the truth as best he knows it. Whether or not they told him the truth is a totally different story...

BB.

 

Don't these cars have rev limiters for a reason? Is Porsche just being over protective? These are things that make me nervous...

 

Consider that Porsche must warranty a vehicle some period of 36 or more months - then, many things become clear as to the design and finish.

FYI, past 7k on the na valvetrain is very bad news - even the Turbos shouldn't do it. Have a look at various dyno graphs for the different iterations of the 924/944/968 and you'll see that none benifit from going over about 6k - the only reason we do is to hold the gear a bit longer within a turn or similar maneuver - shifting in a turn can be hazardous to the grass.

 

Mike sent you a PM the other day. Not sure if you got it or not. Can you send me a PM so I know?
Thanks,
dfracolli@northenfcu.net

 

FYI, past 7k on the na valvetrain is very bad news - even the Turbos shouldn't do it. Have a look at various dyno graphs for the different iterations of the 924/944/968 and you'll see that none benifit from going over about 6k - the only reason we do is to hold the gear a bit longer within a turn or similar maneuver - shifting in a turn can be hazardous to the grass.

That is a very important statement and certainly clarifies a great deal. It won't help you excellerate, but it'll help you keep power down when you need to go to 11 in a turn.