hacker-pschorr

I guess "not much cheaper" is a relative term. $3,500 for a claimed SAE Corrected 40rwhp difference? I would say that's significant cost increase for what you get.

You might also want to do a search, there are Murf Stage III+ cars running around with more than the 40rwhp difference. It's jut not part of the "standard" kit.

60+ and counting Murf928 Customers really does speak for itself.

Another big note - the Murf928 System does not require any cutting or permanent modifications to the car.

Cosmo Kramer

If it was one of those Mazdaspeed 3's I could see it, but not just a regular one, especially with the lower gearing of your GT. You never know what these ricers have done though, I had a friend that had a 93 Integra with 300 hp!

Ian928

If you are willing to remove the cats I think an X-pipe is probably the best bang for buck? This reputedly makes the car run a bit lean so you probably need a chip or a Sharktune to utilise the better flow. You could do a search for X-pipe, and maybe someone with experience will post here.

hacker-pschorr

+1

550+whp in a Mitsubishi isn't unheard of. There are a couple in Green Bay designed / built by the same guy that tunes my cars:
http://www.beyondredline.com/?x=projects&id=1
Sub 10 second quarter mile isn't too shabby for a street car. This one in particular is making over 700 at the wheels.

Imo000

Steve,
You’ve done nothing wrong. Forced induction threads are ALWAYS lively and they always will be. It's been a while since this topic came up, but back in the day, it used to be downright NASTY. Nasty but always entertaining, until it got out of hand.

Next time you run into one of them, pedal to the metal and show no mercy or don’t race them at all. If you are not all in, they might get the idea that the race was fair. On the way back from the Niagara run, ran into a RHD Skyline. He started it and I finished it in a few seconds. Michael (Bimmermike) was behind us and saw the whole thing. It was a team effort, he loured him in and I finished him off! I didn’t want to give the Nissan the satisfaction to think he had a chance against a 928.
Too bad we didn't have more time to chat, maybe next time.

Canuck928

Even less than 5 hundred! I have about 3 hundred into mine with all new high quality parts...just have to take your time and shop around piece by piece! Glad to see you posting here again Brett.

dprantl

A Mazda Speed-3 was dead even with my old 5-speed '86 from 70mph all the way to 130mph (I downshifted to 3rd at the start). That 928 was very strong for an '86 too. Physics is physics; that Mazda has ~270hp, weighs under 3200lbs and has a 6-speed.

Dan
'91 928GT S/C 475hp/460lb.ft

hacker-pschorr

Hehe, my supercharged 81 with a full tank weighs 3250

Silly 32V cars with all of that unnecessary weight

jcorenman

30hp from an off-the-shelf chipset is not realistic. Custom shark-tuning, along with an x-pipe (and no cats), no problem.

But, as said, first make sure it is running at 100%. For example a faulty knock or hall sensor will take 6 degrees of advance right off the top. To sort that out you need access to one of the diagnostic testers or a sharktuner. There is no dashboard light that says "knock sensor fault, running poopy to protect your engine".

Have fun any enjoy the car! GT's are (IMO) the best of the 928's.

dprantl

In all honesty, probably the easiest way to add forced-induction to a 928 yourself is to put a rear mounted turbo on it (Mark R's is not a rear turbo, it's a mid-turbo). There is a good deal of space at the back where the rear muffler is. All you really need is the turbo and have a custom welded exhaust/intake pipes and connections and get an oil pump and oil lines. You don't even need an intercooler because the intake pipe will be so long it will cool the charge some. 6psi with tuning and you have 400rwhp, enough to leave that Mazda in the dust.

Dan
'91 928GT S/C 475hp/460lb.ft

pcar928fan

Dan,

You are right...while Mark R's is WAY at the back it is NOT behind the rear axle (well most of it is not behind there) and it seems to work VERY WELL with plenty of room and seems to be a pretty easy install... He is putting out some good numbers too. Not sure if you will see much of that kit in the future though. It takes so long to put it all together and make the stuff for it he can hardly make it and sell it at break even...the parts used are GORGEOUS! Mark is very particular too (or has been on this kit) and the install is quite clean and beautiful. You should see the crazy front intercooler he had made... work of art!

Korwen

In regards to the OP:

This is just my opinion, and I know there is evidence to the contrary, but I think if you're looking for a *****-out, G-pulling drag monster, the 928 is not the right car. Technology is such that some of the boy-racer cars these days (Lancers and Subarus, Mazdaspeeds or even VWs) are not too far off the mark of our cars, even more so for someone who owns a 16v such as myself. In my opinion these cars are less about all-out horsepower and the kind of street racing typical of the boy-racer types, and more about class and sophistication. Sure that kid in his tarted up Mitsubishi may be able to punch it and out-accelerate you on an on-ramp, but who cares, he's in a Mitsubishi, you're in a beautiful and luxurious GT, you'll get where you're going plenty fast, while looking and feeling better at the end of it.

My advice, like others have said in this thread, is read and learn more about your car and cars in general, and then spend your time making sure your car is in perfect mechanical condition, and then enjoy it for a bit before you start spending money elsewhere. If all you care about is big horsepower and racing kids, sell the 928 to one of us and go buy a LSx Corvette or Camaro.

hacker-pschorr

I know as much about paint as you know about forced induction on 928's. So I honestly have no way to reply to that.

You appear to be implying a Murf Stage III is somehow an inferior product to your brother's Turbo Kit. If that's the case, you are once again so far out in left field your are lost in the parking lot.

Once again your lack of reading comprehension is staggering. You might want to re-read Lizard's post again.
Here I'll help you with a direct link:

https://rennlist.com/forums/7089911-post21.html

You of all people should talk. With a history of slandering other vendors and especially coming from a guy (you) who was originally banned from Rennlist for threatening physical violence towards other members and moderators. You might want to re-think who you are accusing of starting anything.

Go ahead and post them, I've seen them all.
I quoted HP figures from your brothers site. You make it sound like I'm changing the data around.

Stick to painting threads Mark, it's more your forte.

Are we having fun yet?

Fabio421

You guys are both f@gs.

Tampa 928s

Let's not fight kids!
With any after market modification it takes a lot to get the bugs out and long term reliability makes it or breaks it.
I have a S/C and for the most part happy with it, is it flawless, no but can it be improved, I think so, but you need the knowledge, a tuner or help from the builder.
Every one has a heart felt attitude about how to make H.P. I agree if you want a drag car build one, but don't make it a 928. My 68 Vett with a stroker is just that, looks really cool, fly to 110 and handles like crap.
The problem I see is taking a 25 Year old car and trying to keep up with a ricer is just plan ridiculous. After years out of production it still turns heads can you say the same about 90% of the cars out on the road. So some punk kid that has a afterburner on his ride and cares less about how he drives and endangers people is not the one you want to race.
Enjoy your ride it is such a bargain and if you go S/C, turbo or Nos it's all good.