14b Limits?

[screwdgie]

HAHA my bad. Read it too fast . I was gonna say, that thing would just be blowing hot air by then

 

[tstkl]

i ran consistent 12.80's on a bone stock 14b at 20 psi, stock injectors, stock SMIC and MAFT, with no engine work done. Upgrading the injectors and intercooler stuck me in the 30's. I will run this 14b until its completly toasted

my question is, did you run a higher boost, or did the larger injectors just prevent you from leaning out and thats where you gained the power to drop half a second. I doubt an intercooler upgrade could have that much of an impact alone. what psi did you jump to?

 

[DevilSperm]

my question is, did you run a higher boost, or did the larger injectors just prevent you from leaning out and thats where you gained the power to drop half a second. I doubt an intercooler upgrade could have that much of an impact alone. what psi did you jump to?

I ran the same amount of boost, 20 psi, and still do. The intercooler I'm sure helped a bit but the injectors were the main reason I think. The stockers just couldnt keep up with everything, im sure they were open the whole time minus the shifts.

 

[tstkl]

I ran the same amount of boost, 20 psi, and still do. The intercooler I'm sure helped a bit but the injectors were the main reason I think. The stockers just couldnt keep up with everything, im sure they were open the whole time minus the shifts.

were you using race gas. were your logs picking up on a lean afr?

 

[DevilSperm]

yeah this was on 118. I never logged anything at the track. It was such a PITA to tap go on the palm that i just didnt worry about it. Also my O2 was dead so it was hard to tell. I ran a pretty rough tune, just enough fuel to make it run and not bog from being rich. I decided not to push my luck too far.

 

[tstkl]

yeah this was on 118. I never logged anything at the track. It was such a PITA to tap go on the palm that i just didnt worry about it. Also my O2 was dead so it was hard to tell. I ran a pretty rough tune, just enough fuel to make it run and not bog from being rich. I decided not to push my luck too far.

yet you run 12.3's on a 14b

 

[DevilSperm]

I havent figured it out either man,

 

[tstkl]

I havent figured it out either man,

whats funny is that I've actually been following your posts a lot lately. (along with some other people running sub 13.3ish on the 14b) and I still don't understand how people with similar mods and evoIII's will get 13's and you are sitting in the 12.3's. is your car extremely light, or do they suck at driving?

btw were both named brian, just thought that was funny.

I understand how project goodwill does it. that car is F_CKING crazy. it probaby has a good 300 lbs less than my car, along with every mod i could think of short of new compressor blades, housing, and a new turbine wheel. (he did upgrade the turbine housing, since i dont think you could cram very much down a 6cm^2 turbine housing without extensive clipping)

 

[DevilSperm]

So i just typed this long ass reply and hit a wrong button and erased it all ANYWAY, I have lightened the car a lot, no bumpers and a lot of the insulation removed. But i still run full interior and stuff like that. I know it sounds braggy but I think a lot of it is driving. for some reason my 60 foots are a lot quicker than people with similar setups. If you look here http://dsmtimes.org/times.php?Header_Type=Turbo_14b&Page=1 Im #12 and look at the rest of the 60's. Without any mods, i dropped from 13.70's to 13.0's and high 12.90's just by driving. I worked really hard on improving my launch and shifting and I think it paid off.

 

[tstkl]

there goes my hopes at hitting 12's my first try, maybe ill make top 100 though

 

[Steve93Talon]

My car is full weight with the exception of AC removal. Low 12s on the 14b is ALL about tuning and driving. Use a wideband, tune for 12:1 on race gas, run like 24 degrees of timing advance, crank the boost as high as the IC can take it, and launch/shift the hell out of it. My best passes are on low 1.6x 60' times. Pulling 1.78s ain't gonna cut it.

 

[boostdog]

ran a 12.9 with interior removed no hood and 21 psi. open exhaust before the cat.

 

[screwdgie]

I'm thinking of switching to a blow throught maft setup? Would I see nice gains using that with my setup right now?

 

[Steve93Talon]

I'm thinking of switching to a blow throught maft setup? Would I see nice gains using that with my setup right now?

I'm on a hacked 1G MAF, and there are few 14b cars quicker than mine (and most of the ones that are have been gutted).

 

[Joesmoke]

Cranking the timing on racegas has been mentioned a couple times in this thread, and that cant be stressed enough. I think some people overlook this.

Run a 14b @ 20 psi and 18 deg timing, then run the same psi at 24 deg, youll feel the difference!

High octane fuels are slow burning, and without advanced timing, can actually cause a car to run slower.

Hmmm, timing.

 

[screwdgie]

How can I change the timing? I dont have anything to tune with. I dont change the base timing right?

 

[tstkl]

yea, what if your only tuning device is a maft.

 

[Coup D E'Tat]

FWIW, DSMLink estimates 256whp @ 15.5 PSI with 20* peak timing. I'm going to up timing a tad more in some areas, and see if I can pull some more power out of it at that boost level. The turbo is not mine, so I will not turn the boost up.

I'm seeing 32 lbs/min at that PSI, by the way.

 

[tstkl]

I'm seeing 32 lbs/min at that PSI, by the way.

I've always been told that a 1g cannot log lbs/min. what are you using to log this? how is lb/min calculated? more info please. also my other question I posted about advancing timing still hasn't been answered if anyone wants to answer that one

 

[Spidey]

^ Look at his vehicle profile, he has DSMlink.

 

[Steve93Talon]

How can I change the timing? I dont have anything to tune with. I dont change the base timing right?

Unless you have DSMlink, AEM, or some other way to adjust timing, the only way is by rotating the CAS. Remember that your logger assumes 5 degrees base, so if you raise it to 8 degrees, you have to calculate the extra 3 degrees on top of whatever it shows you the total advance is. (new MMCD has a selection to adjust base). A subtle change of 2-3 degrees will make a world of difference on C16.

 

[quickwhips]

i am going to try to run 11.99s this year with this setup

ported all to hell 14b, 02 housing and exhaust manifold
opendownpipe
AEM
HKS 272
ported intake manifold and slightly ported head


i will keep you guys posted
richie

 

[Enraged78]

I ran a 13.6 at Lebanon Valley Dragway with nothing other than a 14b, exhaust, boost controller, rewired fuel pump and a data logger. This was in a full-weight 2G with spare tire, and it was about 98 degrees out at the time. The track was hotter. I ran the 14B at 23PSI, which settled to about 20ish by redline. I was running 108 octane unleaded in the tank, and my stock clutch was slipping like a bastard. My normal 60 foots of 1.65ish dropped to 1.83. I only got a few runs in that day, but I would soak my intercooler down with a mix of distilled water and alchohol between runs. Helped keep it cool for about a minute. At that boost level, I was still getting full timing, and my o2's were sky high. I was seeing voltages greater than 1.00V on the o2, which was definately a little different for me.

Anyway, I've since stepped up to the Evo III GT, and while I really like the turbo, I miss my old 14b. It was easily my favorite turbo. Spool up was like lightning, and while it ran out of steam past 6000, it was still a great turbo to run on the street. My GT gets full spool by 2800, but it just doesn't feel the same. However, once the GT gets to 5,200RPM, that's when the real fun begins. DSMLink shows a peak of about 30Lbs./Min on pump gas at 18PSI, which is about what my 14b ran on race gas.

Hope this helps the orginal poster. The 14b is a great turbo with the right supporting mods. Fuel, intercooler, intake and exhaust will net you some incredible gains.

Matt.

 

[Coup D E'Tat]

I've always been told that a 1g cannot log lbs/min. what are you using to log this? how is lb/min calculated? more info please. also my other question I posted about advancing timing still hasn't been answered if anyone wants to answer that one

As Spidey said, I have DSMLink.

And, as Steve said, advancing base timing is the only real way to adjust timing without better engine management.

Edit : Also, all of my numbers are on 93 pump gas. Just didn't want to confuse anyone since most people in here are talking about race gas.

 

[scottsee]

I'll be installing Dsmlink, 14b, FMIC, 3in turbo back this year. I'm shooting for a low 13's pass if not high 12's seeing i did a 14.08 pass with my t-25, fipk, intake, uicp, 1g bov, mbc.