[RESOLVED] BW s256 boost issues!

[We're on Boost]

dsmmatt, when you order a chip from Keydiver do you call the guy up and talk to him about what you want, or do you order it off his web site, or what?

Gary

 

[keltalon]

so what clutch are you going with. I put my e85 chip in tonight. started tunning from scratch. Im at 17psi 18 deg of timing 0 knock. Need to get my low trims inline still. I should have it tuned and running 25+ psi by the end of the weekend. Going to add some more timing aswell.

I don't know at this minute. I need some time to research which one will be suited for my needs! this is the fourth clutch that i have had issues with as far as the springs are concerned. The last one i put in was the clutchnet with the encased spring I was very confident with this design i would have no more problems with my clutch.

 

[dsmmatt28]

dsmmatt, when you order a chip from Keydiver do you call the guy up and talk to him about what you want, or do you order it off his web site, or what?

Gary

I emailed him. He set my chip up dual image. Flip of a switch and I can run e85 or 93. I have maft generation 2. He locked in some values since Im running gm mas. On the IAT wire I can control timming now since the gm mas doesnt need that. With the maft generation 2 I can adjust timing, I have AFR tracking. I can set my desired Afr and it will automatically adjust afr to get to my desired AFR that I have set. This thing is great. I set the Input to Gm mas LT1 the out put to 1g and its done. It translates the signal. There is no little dials or anything that I have to adjust. I told jeff what I was going to be running and he custom made the chip for that. Then I just go in and fine tune with the Maft Generation 2, You have to tell keydiver that you want the timing control feature. When you order it. It was an xtra 25 bucks. It is well worth it. Last night I pulled over pulled out the Maft Gen 2 and just bumped it up. You can go half a degree or a full degree. This thing is so simply its crazy. FULL THROTTLE SPEED - Item Description Page this is what im tunning with. Keltalon I have a act 2600 street disc. I have had no problems I have had this clutch for two years and I have beat on it. I dont pop the clutch I slip it out. It still grabs even with the new BW

 

[We're on Boost]

He locked in some values since Im running gm mas.... I set the Input to Gm mas LT1 the out put to 1g and its done. It translates the signal.

GM MAF, Maft gen2, and keydiver eprom, sounds like a good way to go.
My setup will be similar except I have an ecu+ instead of a MAFT. The ecu+ will translate the GM MAF to 1g hz, like the MAFT does. I'm wondering, you say the gen2 maft translates the LT1 MAF to 1g for you, but you also say keydiver locked in some values since you are running the gm maf. Why did keydiver have to do anything to accomodate the gm maf - your maft is already doing that isn't it?
Also, are you able to read or log the 1g hz number that your maft puts out to the ecu? I would be interested in knowing what the highest hz number is that you see at WOT and high rpm. I believe the maft calls that number the "FO" (frequency output value).

Thanks,
Gary

 

[dsmmatt28]

Well I went to the dyno!! made 373 @25psi straight e85. I was having ignition break up. I was at 0 knock 22* of timing. afrs were 11.8. Im in the process of getting a brand new coil pack and will go back to the dyno. I dont have a scaner so I will take a pic and see how it it looks of the dyno graph. If it is clear enough to read, then I will post it up. I can see at least 450hp once I get the coil pack and add some more timing. At the same boost level.

 

[T9S1i]

good stuff! what kind of dyno was it? mustang dynojet?

 

[We're on Boost]

That sounds good. Did you notice at what rpm you started getting misfire?

Gary

 

[dsmmatt28]

Its not misfire. Its more of not suppling enough spark. If you look at the dyno sheet it shows the ignition line across the entire pull. The line is all over the place. Its not a smooth spark. Yes this was a dynojet.

 

[We're on Boost]

dsmmatt, my usual question, what was the whp at 4000 rpm on that dyno pull?

Gary

 

[dsmmatt28]

HMMMM They dyno sheet is over at my buddies house I will grab it tonight and try to post it up and let you know. Bye the way I just spun a rod bearing. Same cyclinder as last time. I think I have a oil pressure issue. Im going to get a new oil cooler, oil pump and oil filter housing. Im already in the process of rebuilding.

 

[dsmmatt28]

What I did like about the dyno sheet is that the power came on early and carried all the way to 7800. My car is not a dyno queen. The power band on the car is fat.

 

[We're on Boost]

Fat power band is good, that's what I'm looking for.
Darn that rod bearing thing is going around. Geoff at Full-Race says his 2.1 liter evo test motor just developed a rod knock a few days ago. It's the motor he's using to test a whole bunch of the Garrett and BW turbos all on the same motor with the same bolt ons so as to get comparable results. So he has to take a break in his testing to rebuild the bottom end.

Gary

 

[keltalon]

Well I went to the dyno!! made 373 @25psi straight e85. I was having ignition break up. I was at 0 knock 22* of timing. afrs were 11.8. Im in the process of getting a brand new coil pack and will go back to the dyno. I dont have a scaner so I will take a pic and see how it it looks of the dyno graph. If it is clear enough to read, then I will post it up. I can see at least 450hp once I get the coil pack and add some more timing. At the same boost level.

Matt congrats on the dyno numbers! I really can't give my car any attention right now. just trying to play catch up with my business. As soon as we finish this large job I will get back to my car. I will heed your suggestion on the clutch. I think i am going to go with the act 2600 with street disc. soon as i get updates i will post them ! here is the last run before the clutch went out this turbo makes great power at low boost. I have run into a problem getting the turbo to boost past 20psi. could be bov or wastegate. no boost leaks what so ever. I will address these issues when i fix the clutch!

 

[We're on Boost]

I have run into a problem getting the turbo to boost past 20psi. could be bov or wastegate. no boost leaks what so ever.

Hmm, dejavu.
Well it fits - "boost issues" is the name of this thread!
Hope it's not another bad turbo.

Gary

 

[keltalon]

Come to find out I broke two fingers on the old 2600lbs pressure plate. When the weather warm a little i will give this matter some attention!

 

[olmytsi]

Ouch...

 

[keltalon]

Ouch...

Yeah what i said

 

[keltalon]

Well guys I finally had a chance to removed my transmission to see what was the problem with my car not being able to go into gear with the engine running. I first assumed that it was the pressure plate but I was totally wrong. Come to find out some of the carbon Kevlar material, I guess from slipping the clutch, lodged itself between the spine of my input shaft and the actual clutch disc. In other words the clutch disc was stuck on the input shaft therefore the pressure plate would not disengage the clutch from the flywheel. This created a nightmare to remove the transmission from the car. When I removed all the transmission bolts I could not remove the tranny! I pried and pried but to no avail. What I ended having to do was take the pressure plate off while the tranny was still installed. I managed to get a small ratchet up in where the shift fork was and remove the small 12mm bolts that held the pressure plate to the flywheel. After several hours off came the tranny, pressure plate and all! I ordered another clutch disc ,sprund 6 puck this time. I already have the new 2700lbs pressure plate from competition clutch so when the disc comes in the car will be back on the road and maybe I can catch up with matt and upgrade my turbine housing and exhaust manifold! I also found out why the beast was not boosting, as she should. The down pipe is no longer aligning with the punishment 02 housing causing the exhaust not to flow, as it should. Stay tuned for more updates, as I will be visiting the dyno again in a couple weeks. It has really been eating me up to see what the car really can put down hp wise. The previous dyno @ 419 was made with boost level around 21psi. I want to see what she does @ 30psi. When i dynoed @ 419hp I was logging 423hp using dsmlink hp estimator. Before I started having boost issues and was able to run 30psi I logged 504hp using dsmlink hp estimator. So matt you are very close to what your car would have made , in you other thread, if you had dynoed on the dynojet!

 

[olmytsi]

Having to remove the clutch with the trans on, that sounds like a nightmare...

Don't give up!!!!!!

 

[keltalon]

Having to remove the clutch with the trans on, that sounds like a nightmare...

Don't give up!!!!!!

Thanks! Can't give up right now. Other than the clutch issues the car runs like a champ

 

[We're on Boost]

I also found out why the beast was not boosting, as she should. The down pipe is no longer aligning with the punishment 02 housing causing the exhaust not to flow, as it should. Stay tuned for more updates, as I will be visiting the dyno again in a couple weeks. It has really been eating me up to see what the car really can put down hp wise. The previous dyno @ 419 was made with boost level around 21psi. I want to see what she does @ 30psi. When i dynoed @ 419hp I was logging 423hp using dsmlink hp estimator. Before I started having boost issues and was able to run 30psi I logged 504hp using dsmlink hp estimator. So matt you are very close to what your car would have made , in you other thread, if you had dynoed on the dynojet!

Glad to see you are back in it! Had a feeling you were doing something when you showed up over in dsmmatt's thread.

The downpipe not aligning with the O2, how can that happen? Are the holes in the flange slotted or something?
Your dyno at 419hp was with an S256, not your current turbo, right? What octane race gas was it on?
Are you still pretty sure your S259 has the smaller turbine wheel, the 69/61mm?
I've been thinking about getting one of the new baby Borgs, they come with that wheel.

Gary

 

[keltalon]

Glad to see you are back in it! Had a feeling you were doing something when you showed up over in dsmmatt's thread.

The downpipe not aligning with the O2, how can that happen? Are the holes in the flange slotted or something?
Your dyno at 419hp was with an S256, not your current turbo, right? What octane race gas was it on?
Are you still pretty sure your S259 has the smaller turbine wheel, the 69/61mm?
I've been thinking about getting one of the new baby Borgs, they come with that wheel.

Gary

Well the downpipe is slotted and what makes it worse is the punishment racing o2 is also slotted I have no idea how the misalignment happened but its pretty bad. I am still comtemplating as to what I am going to do to correct the problem. Its just a relief to know what the problem is! Yeah 419 dyno was with the s256 I used 5 gallons of c16 and 5 gallon of 93 octane. Haven't dynoed it with the s259 yet. I will have to find the invoice to answer what turbine wheel i have Go ahead and get one. The turbo has so much potential its not funny!

 

[We're on Boost]

I will have to find the invoice to answer what turbine wheel i have

Your invoice for the S256 back on page 7 said 69/61 but I don't think we ever tracked down what turbine wheel your S259 came with.

 

[keltalon]

Your invoice for the S256 back on page 7 said 69/61 but I don't think we ever tracked down what turbine wheel your S259 came with.

You know I am unsure about the s259 specs??? Maybe matt knows our turbos are the same.

 

[We're on Boost]

Ok, dsmmatt28 says his S259 has the 74/65mm turbine wheel.

Gary