HP, how much can a LIL 2.5L take? How do they Blow?

[Gary in BR]

I assumed you had been busy with the car, we haven't heard anything in a few days.

I uploaded a picture of my temporary gauge cluster the other day on out intercooler thread. http://986forum.com/forums/showthread.php?t=14282&page=3&pp=20

My next phase...
Cat delete!!
I am deleteing my only pair of cats and install a set of electronic cutouts for the exhaust. I will be able to run almost complete straight pipes or quiet it down for long trips or that cell phone rings.

The only question I still have is weather or not I will run the cutouts via boost or a switch.

With this mod Turbowerx feels I will getter faster spool and possibly a little more boost.
The exhaust mods may be 45 - 60 days away it all depends on my mechanics schedule.

[pk2]

Originally Posted by Gary in BR

I assumed you had been busy with the car, we haven't heard anything in a few days.

I uploaded a picture of my temporary gauge cluster the other day on out intercooler thread. http://986forum.com/forums/showthread.php?t=14282&page=3&pp=20

My next phase...
Cat delete!!
I am deleteing my only pair of cats and install a set of electronic cutouts for the exhaust. I will be able to run almost complete straight pipes or quiet it down for long trips or that cell phone rings.

The only question I still have is weather or not I will run the cutouts via boost or a switch.

With this mod Turbowerx feels I will getter faster spool and possibly a little more boost.
The exhaust mods may be 45 - 60 days away it all depends on my mechanics schedule.

Hey Gary,

Cats eh? Is that a significant bottle neck in the system? It seems like there isn’t much in the exhaust system to change that buys you much except peace of sound. I’ve been looking for electric bypasses for quite awhile myself. I was only going to do it for sound (ala Pedro sport exhaust) if it was cheap and easy. It’s easy but not terribly cheap.

Have to be really careful out here screwing with emissions, every 2 years It’s a real nail biter. When my time comes up again I’ll be posting looking for clueless smog stations in So. Cal.

Right now I’m trying to sort out this AIC. Nice. versatile piece of work, but for the versatility you’ve got figure what you have. I.E. theirs 8 different ways a car can send an rpm signal x dozens of variations on each of those. Then comes the tunning…

Regards, Peter

[efahl]

Originally Posted by pk2

When my time comes up again I’ll be posting looking for clueless smog stations in So. Cal.

Hey, new neighbor, I'll let you know what I find out... I just moved to San Clemente last week (from southeast Michigan), so I need to get my car smogged and tagged. I've got a good connection, I'll let you know how it works out.

Eric

[pk2]

Originally Posted by efahl

Hey, new neighbor, I'll let you know what I find out... I just moved to San Clemente last week (from southeast Michigan), so I need to get my car smogged and tagged. I've got a good connection, I'll let you know how it works out.

Eric

-----------------------------------------
Great,

San Clemente eh, used to surf just south of there at trestles and San Anofre (sic) (AKA Sano/oldmans) all the time. I’m up here in Tustin.

There was a source posted on PPBB a while back about a place in Laguna Hills. Had Porches, Ferraris, etc lined up around the block to get smogged. Gotta figure yhoough, someone going to catch on (or has).

Out here you’ve got pass the sniff test and the like plus a visual.
Please do let me know what you come up with.

Regards, Peter

[Gary in BR]

I am glad its you trying to figure out the WI. It sounds like you are going to get great gains from the research I have read.

Is there so much work involved with the tuning because no one has added WI to a Boxster before?

As far as the cats go, the research I have done shows that turboed cars get some boost and power increases because the turbos can spool faster. In the 996tt there is a power gain by removing the cats. In a few weeks we will know if a 986tt has the same effect.

If I dont get and power gains and just get some sound back, the turbos have muffled my sound a little. I will be happy with just the sound. I need my car to be a little louder to live up to the sinaster license plate.

[Topless]

PK,
Richard brought his 914 to the PCA breakfast today for show and tell. Air cooled 3.1L 6cyl, turbo with intercooler, 500rwhp, 1600 lbs soaking wet. Whew! That thing will easily outrun a Viper in a straight line and corner like a Cup Car.

[pk2]

Originally Posted by Topless

PK,
Richard brought his 914 to the PCA breakfast today for show and tell. Air cooled 3.1L 6cyl, turbo with intercooler, 500rwhp, 1600 lbs soaking wet. Whew! That thing will easily outrun a Viper in a straight line and corner like a Cup Car.

----------------------------------------------
Holy sh__.

Is that the one on his web site? My First Porsche (or v-dub)was a 914. Always pined for a 914-6, though 500whp never crossed my mind (is it air-cooled?).

I knew a guy in school who had one with a V8. He’d actually pop spot welds allover the place (torque). After a night of horsing around, he’d come home with the whole car creaking like and old wooden floor.

To your point though, why is it such a challenge to milk meaningful HP out of these Boxsters. I guess though Richard undoubtedly started with all the best from the ground up, while we’re just strapping stuff on the outside.

I talked to him (Richard) briefly the other day, nice guy, to nice to pester with all my questions. If I catch him at one of the PCA events I will though.

Regards, PK

[pk2]

Originally Posted by Gary in BR

I am glad its you trying to figure out the WI. It sounds like you are going to get great gains from the research I have read.

Is there so much work involved with the tuning ...get some boost and power increases because the turbos can spool faster. In the 996tt there is a power gain by removing the cats. In a few weeks we will know if a 986tt has the same effect.

If I dont get and power gains and just get some sound back, the turbos have muffled my sound a little. I will be happy with just the sound. I need my car to be a little louder to live up to the sinaster license plate.

-------------------------------------------
Hey Gary,

So you noticed my quest for the ultimate WI setup (had to join a bunch rice burner forums to get the dope).

Tuning is going to be a little trick. It’s really only as complicated as you want to make it though. Ideally you want about a 13% H2O/meth to fuel ratio throughout the RPM/load range.

I don’t know how critical the actual mix is though. The cheaper setups just turn the spigot wide open at a set RPM/load level (not really where I’m headed). 3 steps up, the H2O/meth is metered with the precision of a PWM/fuel injector (probably overkill but its where I’m at).

The EGT gauge is the best method I think for tuning. If you’re a AFR is good but the exhaust is to hot so is your combustion chamber, so more H2O/meth. If it’s still to hot & you’ve O.D.’d on H2O/meth, tweak the timing back.

I see it only getting really messy when you go over 50/50 H2O/meth mix, then your coolant becomes a fuel too. I think 30/70 is a good mix.

Makes sense on your exhaust since you’ve changed the dynamics so much on the intake side. For a stock, normally aspirated engines though, from what I’ve gleaned, Porsche pretty much has it nailed. A lot of exhaust setups give minuscule improvement at best, some are actually worse. But loud is fun

Be really interested as to how yours works out as I hope to nipping at your heels soon.

Regards,

PK

[Gary in BR]

The WI seems like the future of modding.
JAAY turned me on to it a few months ago and I have done a little research but I dont have the bravado to dig into it to the degree you have. Some of the 996TT owners have ventured into the WI experiments, but none to the point of finishing the setup. Its exciting to witness other forms of increasing power coming over from other makes into the Porsche world. These sort of groundbreaking experiments are good for all of us.

I agree with you about opeing my exhaust more. with the turbos in the mix removing the cats will have a larger effect on my car that NA cars. As usual I will have a pre and post dyno run made. and I will go as far as dynoing the car in various states of open cutout.

Isn't all of this modding fun. As I have said a thousand times. Im not a drunk, I dont gamble and I dont cheat on my wife. I just mod my car to the brink of sanity. EDIT: brink of sanity and a bigtoe into the insane.