Back on track, op
u know not for anything you have a good modlist, just curious why your gonna put a megan 02 housing which most are known for having a smal hole for the wastegate opening, and throwing it on a big turbo like an fpblack, lots of people are having issues with boost creep on smaller stock appearing turbos. So just curious you gonna get it ported? Im curious to see what your black can do on 91 octane, i myself am tryin to max out my pump gas map on 91 octane, so far my best in 107 ambient temps made 385 whp and 355 tq, so in the next few weeks once my other flow "supporting" mods make it i plan to have a retune done. So fp blacks are nice dont get me wrong, but I wanna see how far the red can be pushed before i blow it haha, and considering ive got almost 30k on that turbo and built engine its still in one piece haha.(knock on wood) So im interested to see what you can pull out on your setup, just if theres one thing i learned, its do it right the first time, and i hate to see ya drop all that money into your setup to find out the megan 02 housing is causing boost issues. But hey its your car good luck

 

My posts werent about lag, spool is within a couple 100 rpm. The Red and Black make great power but they are dependent on running high pressure ratios to do it (boost). The HTA Green makes better power per pound down low than the Red and Black where they will murder it past 30psi.

If the car is only ever gonna be on crappy 91 where you can only run limited boost then the Green makes more power and also happens to spool faster.

 

^^ I totally agree with that, a green or red or bbk's would be better suited for primarily pump gas, now race gas/e85 thats something different.

 

finally someone gets it....

i would only run a black on a built block and running e85 or methanol. no point in running one otherwise imo. much better options that are made to run on 93. my car with a bbk on 93 would easily break 400 on a dynojet.

 

so i got my black on and installed. made 423 hp and 388 tq on 29 lbs with e 85 tune on mustang dyno. was hot outside but something doesnt feel right. when i gun it in 4th it sputters like its almost trying to find the power then it hits. im not an expert on any of this so any help would be great. i did order the fp intake and a better bov to hopefully correct some of the issues. my fp red on my mr felt way better and made 30 more hp and 30 more tq on the same dyno and e85 tune at 27 lbs of boost. help!!!!!

 

423 is not bad on a mustang. Have you checked for boost leaks? also what BOV are you useing? Does it feel like its surge is it any rpm in fourth or just lower rpm's?

 

It's around 5500 or 6000 rpm that it seems to almost loose power before it hits. Haven't had a chance to do boost leak test yet my tuner will have to check

 

Synipse bov or how ever u spell it

 

+1

 

You really need to be running 30+psi on E85 with that turbo. I run 32-33psi on a daily basis with my 3582 on E85. You are going to need a good fuel system to support that kind of power on E85 though. I run 1150cc injectors and a dual in tank fuel pump system. Your power on a mustang dyno at that boost sounds about right though. Crank it to 33psi and you should be getting close to the 500whp mark, just make sure you have the fuel to support it. You will need a good BOV like others have said as well. I just run a tial, but if you are on the stock ECU I guess synapse makes a good one.

 

423 actually seems very low, even on a mustang, at 29psi on E85, on a FPblack.

For reference, a well set up BBK Full will do 430-470whp at 27-28psi on E85, on a proper mustang.

However, I know nothing about sokaroza's build so who knows, something could be holding it back big time.

 

You are probably assuming he has head work, agressive cams and an intake manifold. He probably has none of that. Of course tune plays a big factor too, but at 29 psi, I would be around 460 whp. Not sure what kind of dyno. I run around 125mph at that boost level.

He might have a slightly conservative tune, but he is close (within 30hp) to where he should be.

 

I'm not assuming any of that, the BBK Full numbers I noted are with stock motors, aside from cams. FPreds on a proper mustang will make 430-450 as well @29psi, on E85, on stock motors, with cams.

FPgreens (old school, not HTA) will make 410-420whp, on E85 at 27-28psi.

An FPblack is a 35R+ type turbo, so it should be blowing all the above out of the water, on E85, at 30psi.

Again, I have no idea the circumstances or his build, I am just pointing out some data points

 

Yea if he doesn't have cams that would explain it right there. Dynos can vary as well, so it all depends on where he is running and how the dyno is set up. A better test would be a trap speed from the track. If he is only hitting 120, then I would say something is a bit too conservative. Boost is way too low for E85 on that turbo anyway.

I know a local guy that ran an FP black and ran 11.1 @ 128, which was about identical to what I was running on the same day (hot day). I am sure he was pushing 32+psi though. I would say at 29psi, he should be running mid 120 range (124-125).

 

thank you for all the replys. i do not have a built motor or head work done. i have pte 1200 cc injectors and a walbro 255 fuel pump. tanabe blue exhaust, ets 3.5 front mount with the ets upper and lower piping. forge manuel boost control and cosworth 272 intake and exhaust cams. hks intake, and the synipse bov. tuned on e85 at 29 lbs. (mustang dyno). like i said before there is a sputtering and loosing power when i gun it in 4th gear. almost like its missing before it hits. really doesnt feel right. i had a fp red on my mr and it was very fast and never any of these issues. made 451 hp at 27lbs on same dyno. gonna regap the plugs smaller and see if that is the issue. or maybe its the megan o2. i dont know at this point.