Matthew

[sketchman]

So a botched (but still very nice results) dyno session still doesn't help.

My John. Forgive them, for they know not what.....eh they just know not.

[eurotiva]

Tom is awesome!

[GenevaDirt]

Cleaned this up as best I could. I do not want anyone to think I deleted anyones post for any other reason than they had nothing to do with Tom's original intention for his thread.

[Prafeston]

Thanks GenevaDirt

Tom, tell us more about your plans for Matthew and your trip to Florida to see Greg!

[eurotiva]

Another question for Tom, sorry I didn't catch what lug pattern the car is? I want to make sure and have the right wheels for when you bring it down

[bhazard]

Stock brakes

[TominMO]

Greg, it's 4x114.3. I was thinking about that too.

Rafe, planning on heading down in late Jan/early Feb, but it's flexible. It would be nice to be there to help Greg move, even though being old I can only carry things like pillows, bags of cotton balls, etc.

Want to take it to Beach Dyno, where Casper and Larry were dynoed, for as direct a comparison as possible. I'll use 93 octane for realistic numbers. At the track we'll switch to 110-octane avgas and bump the timing up, which we also did with Larry.

[TominMO]

Was talking to Greg today about me coming down, and mentioned to him that it was still accelerating strong when it hit the rev limiter. He suggested installing the BP ECU, VAF and injectors. The ECU has about a 1000 RPM higher fuel cutoff than the B3's, so this could give ~10-15 more HP, if it's true about more top end being available. Worth trying anyway. Instead of BP injectors we could just bump FP up to 80 or so on the B3 injectors. This all makes sense to me because I think this B3 is flowing as much as a BP. Once Greg gets some seat time in it, we will come to a final decision on this.

I will try to dyno it both ways, the OE Matt configuration and the BP upgrade. Bumping FP and swapping out the VAF and ECU should just take a few minutes between dyno runs, esp. if the stock ECU is just hanging or duct-taped into place.

[Rocketman]

I doubt it is flowing as much as a BP. 80psi fuel pressure is very, very high, I would not run them that high. BP fuel management might not be a terrible idea but an actual tune would be more ideal.

Get a Wideband system & check your AFR's. If it's leaning out then yes, change some stuff around. You may be able to play with the VAF and richen it up a bit without touching fuel pressure but you'll want the wideband system to see exactly what changes you are making.

[TominMO]

I could pull the WB out of my Aspire for the trip.....

[rmoltis]

Do it...
The dae header has the empty port for it.

[eurotiva]

I was thinking if we had a wideband, and put matching ecu, injectors, and vaf, that would bring the rev limit up?

I know 80psi will be too high for a stock ecu and injectors.

Might make ya cringe, but I saw 140 psi on my fuel rail while running an fmu

[rmoltis]

I might advise against raising the rev limit.

Simply because the bottom end is stock and has over 190,000mi on it.
And seeing as the engine was modified to produce twice as much power as stock.
Pushing it past the redline with a stock bottom end could possibly be catastrophic.

To each their own but I wouldn't raise my redline without strengthening the bottom end first.
Just my opinion though.

[FestYboy]

Scrappy repeatedly sees 7500+ rpm in anger (as did Lex before i stuffed him full of BP parts), the bottom end takes it like a champ, i would not hesitate to put Matthew up to 7000.

[eurotiva]

Scrappy repeatedly sees 7500+ rpm i would not hesitate to put Matthew up to 7000.

That's all I was thinking, 7k. I know without even talking to PO, that he'd suggest a higher limit.