Interesting Dyno Results
 

91 Octane
Stock Exhaust
FBM base kit

base map vs tuned



http://i619.photobucket.com/albums/t...psea2dcf69.png

why? because of the low power achieved?

More details?

Curve seems strange to me--seems to run out of steam pretty quickly at 6500 and less linear than other examples I've seen.

Power was definitely lower than I expected, but stock FRS tend to dyno around 140 on this particular dyno.

Looks like you have a boost leak....

I would definitely do a boost leak test on the whole system. Doesn't look right.

Did you get any datalogging of your boost curve? Something is definitely going wrong at 6500 RPM. You are either losing a ton or boost, or knocking and pulling timing.

Looks like you guys may have been right. The weld where the MAF sensor is installed had several leaks in it. I'll try and get back on the dyno here soon.

How did you find the leaks?

Built a boost leak tester and hooked it up to a compressor. Tester looks like this:

http://www.myturbodiesel.com/images/...leaktester.jpg

Immediately I could hear air leaking around the maf sensor and I was only reading about 3 psi on the gauge. After spraying soapy water I could see bubbles forming on the weld. Thankfully I don't think it's anything a little JB weld can't handle for the time being. It was the last thing I thought would leak.

this. Are you data logging on the dyno?

Good advice, problem located, problem solved. I love this club.

thats sucks, back to the rollers we go. at least you seemed to have found the leak.

My car made 134.5 stock on that same dyno.

Eh...

http://i619.photobucket.com/albums/t...ps547dcbf1.png

That's coming from the connection of the compressor inlet to your tester, right?
Bubbles rolling around the compressor housing walking toward the turbine side.
Actually leaking from the tester connection.

If so... no worries, just a funny picture to post.

It's the compressor housing itself unfortunately. Bubbles are actually walking toward the tester away from the turbine. I can't hear / feel any air, but it sure can double as a bubble machine.

At redline I'm seeing a drop to about 7.1 psi from a max of 8. Might explain the drop off in power I see on the dyno.

If I remember correctly, the GT28s have no O ring; bolts are definitely snug. High temp RTV seems to come highly recommended.

That is interesting looking. I know I didn't put anything on any of my bolts when I assembled and clocked my GT28.

Use this as a cheap excuse to get a gtx30 :)

http://i26.photobucket.com/albums/c1...pse89738ea.jpg


Mustang dyno after addressing some issues with the original fuel pump install and sealing the turbo. I don't advise following the instructions that are sent with the kit for the pump.

That's still very, very low. Something is wrong there.

On a Mustang dyno though? Those read super low as it is. Isn't the base FBM kit only do between 260-280whp on a Dynojet?

i would still consider that to be very low. I've never seen an FBM kit make less than 270whp even on a completely stock car on 91. That's what, 225whp? I could be wrong.

217

For what it's worth, it read 155 at the wheels before addressing the fuel pump. The original installer followed the instructions on the install to a T, complete with zip ties. (not being sarcastic) It's now much more secure.

correction to a dynojet reading would be 12% according to the sticky (not an exact science, i know). that put's at at 243 dynojet whp. i'd get the thing looked at.

Quite honestly, I think the numbers people think it makes aren't realistic.

Here's King Tut's Dyno on 93

http://brz.ridedomain.com/titan.jpg

Considering it's on a dynojet with better fuel, that's damn near identical.

This was his 14psi run.

http://brz.ridedomain.com/dyno.gif

We just did a complete turbo install on a customer car that made 304hp @10 psi on 93 pump.

On 16 psi and e85 we made 400hp. I will post up the whole build shortly.

I would not quote my numbers. As time has gone on, I have grown less confident in either of those dyno plots being correct due to RPM pickup issues. The RPM scale is not correct for either pull that was collected. I will have new dyno plots after July 12th.

@Gen Gad to see your making good progress.
Keep us on the up n up.

All BS aside, sounds sweet.
Looking forward to it.

Getting perfect RPM reading can be so picky/irritating at times.

That's dyno only goes up to ~6400rpm lol

if thats the case you can just read the runs as mph instead of engine speed.

Yes sir, the fuel pump install can be a pain in a big ass.

Here's a compilation of what I've learned in the last few months of it.

http://www.ft86club.com/forums/showthread.php?t=33993

Yes, the original zip ties the installer used started to dissolve. Zip ties aren't really the best for orienting the pump correctly either.

Much better, you have a couple things working against you at this point...

1. 91 octane :cry:
2. Factory exhaust (lots O back-pressure)

Free up the exhaust and you will pickup spool as well as the ability to run a little more timing up top.

Corn Juice will also help if it's available :burnrubber:

We made 290 wheel hp recently on stock exhaust with a base kit and manual boost controller.

Ehh...I'm starting to think I have more working against me now. Bob put down 216 (91 octane) with his innovate kit today on the same dyno. His power train is stock other than a catback, but he also still has both cats.

The best thing to do is get that thing on a Dynojet with at least AFR logging and hopefully boost logging and get some real SAE corrected numbers. Then we can see what the car is doing and see if your making the correct boost numbers and the AFRs are where they should be. If you want to do some datalogs, I will take a look and compare to my car.

Have you checked your cat to make sure it's intact? I saw someones thread where they melted one or both of them.. don't recall who's.

was that @CSG Mike when he had the DI failure?