Last time I did 0-60 runs I was getting 4.8s and 4.9s at 8psi. I haven't done any more timed testing since going to 10 psi.

--Steve

 

gurgen-

my numbers are with only 7lbs .... until late last week, i couldnt get more than 7 out of her (made belt changes, adjustments, and tuned the BOV)......

the 365 mustang dyno number translates (approx.!!) to 390±± rwhp per any DJ dyno, so im not sure what type of dyno tohers use when reporting their output (i made a good post about the differences in the two types of dynos, awhile back)

tomorrow i will have the 3.12 pulley installed (vortech states that this is NOT a 9lb pulley, and that they dont rate them in pounds, but rather in sizes, typically diameter.... the oem pulley is 3.33)

I hope to get more boost SOONER in the revvs (something the TT guys get ALOT more of than us s/c'ers......) moreso than getting a top - end surge..... either way, i will be happy, as the exhaust made for much bettter spooling alone!

 

Es,

I see. I think what you are running now is the "8lb" pulley - as that's what the stock kit comes with. Not being able to get to 8lbs is probably becasue of your very efficient exhaust, which deceases boost due to lower bakcpressure on [at least] centrifugal SCs. What you will be going to, I assume will be the "9lb" pulley that zimbo (Steve) isrunning now. He actually does get to 10lbs at 7000rpm. Of course I maybe wrong, you may have a smaller "6lb" pulley - but, again, I thought that these kits are shipped with the 8lbs configuration

 

gurgen-

i guess im confusing things somewhat... i am now hitting 8lbs of boost, and have been since the revised BOV , belt tensioning, and installation of the crawford cats, fuji Y, and rest-of-the way exhaust....

with the fuji system, i am now pinning boost levels, instead of building to them (much, much better!!)

the oem exhaust is NOT better for my application, for certain (to much BP...

and yes, i have the 3.33 on stock (stated to net 8lbs of boost, and 412 crhp, per vortech) , but that is now in the past.....

more later

((sorry for the hijack))

 

Oh no, I didn't mean that the aftermarket is bad - it is of course good, but sometimes has the sideeffect of lowering boost (seen on ati cars).. You are all set, FI is so much fun!!!!!!!!!!

 

gotcha ----

i think for n/a, exhausts are overated BIGTIME....... i know (IMEO) that i had a substantial change in my boost delivery, when i ditched the oem cats and everything behiund them.......

thoughts on headers (realizing that you have TT manifolds already) for the cent. application???

i think crawford (or maybe even fujitsubo again??) will be my choice........

eS

 

at this point, the difference (given the FI baseline HP numbers) MAY be pretty negligible (never seen the actual FI hp changes with this mod); hte difference on your wallet can be as much as 50%. Crawford headers are the best if money is no object. Otherwise, DC's might be good, given that they are about 1/2 price of the crawfords. I'd wait about a while until some of the guys that ordered DCs intall and dyno (i know of one in particular!), and then make your decision

G

 

Ok, just for comparison purposes I did a couple of 0-60 runs tonight @ 10psi (ie. 34-tooth pulley w/ rev limit at 7100rpms). Street tire pressure, launch from about 3000 rpms from side of road. These are the first two runs, in order.

60ft: 2.011s
0-60: 4.734s
330ft: 5.451s

60ft: 2.055s
0-60: 4.793s
330ft: 5.519s

As a point of reference my previous best 0-60 @ 8psi in numerous tries under similar road/tire conditions was the following:

60ft: 2.055s
0-60: 4.884s
330ft: 5.600s

My best 330ft time at the track (@ 8psi) was about 5.50 seconds.

--Steve

 

Geez Gurgen, you and es hi-jacked this thread! Glad to hear those results last night and thanks for the call.

-Randy

2 G or NOT 2 G, there is no question!

Injen SES, Kinetix cats, K&N Typhoon, 19" PIAA Super Rozza's (19x9 & 19x10)

 

Steve,

Thanks for the numbers, they look great! You also have the JWT flywheel and clutch right? How is it holding up? Can't wait to see the improvement on your garret-based custom setup, you will definitiely see improvement with those BB turbos.

I should probably tell you about my 60' times. To the best of my recollection, my best was 2.08 (range 2.08-2.18). I believe my 330' times were in the 5.6 sec range (don't quote me on this, i will double check tomorrow).

I am going to be switching out the TC for the stock one, and I just hope to see a positive difference! I should prolly do this after I get my test pipes, to take the crappy RT's out of the equation.

Gurgen

 

quijibo,

The power delivery is very satisfying. But, to answer your question more objectively, there is a slight lag (in first gear only) between when you hit the gas and the car begins to move (~2500rpm) to about 3000-3200rpm (just a split second), and then it accelerates very quickly in a manner that pushes you harder into your seat. This strong, rising pull continues to about 5000 rpm, after which it accelerates more linearly to redline.

Hope that helps

G

 

Gurgen,

<blockquote><font class="small">In reply to:</font><hr>

"I should prolly do this after I get my test pipes, to take the crappy RT's out of the equation."

<hr></blockquote>

Is that really a fair statement? Some people who own RT's (like me, Eagle1, and others) have put a good number of miles on them w/o problem. I personally believe that the people with problems (like Doug @ crawfordzcar pointed out) are not keeping their cars under 2000-2500 rpm's when they warm up the engine. This causes the car to be running too rich and the unburned fuel collects inside of the cats. The cats then get hot (above 600 degrees F), the fuel burns and destroys the inner part of the cats.

See the caviot below...

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>

 

Gurgen, I enjoyed our conversation the other day.

I just ordered the major parts (BoostLogic manifolds, Garrett GT28R turbos, etc) so we'll see what happens. I'm planning for 8psi daily driven. If I can find more information about built rods/pistons I will likely put those in along with a set of cams and target 10psi (not immediately, but eventually).

It's arguably a big waste of money to keep playing around with my car this way, but frankly I went so many years with crappy cars from age 18-34 that I've earned the right to have some fun

--Steve

 

Steve, absolutely! Looking forward to it.