Next Generation in Supercharging Means 275whp!

[turbophil]

Dma,

I understand. No offense taken. I posted up a bunch of pics of the engine that let loose in a thread I started back in late October.It has all the details of what happened. Long and short a valve droped and broke the #1 piston. I was running the tar out of the car with the M62 in mid October and giving the rev limiter a good work out. I'm one of those drivers that will ride the rev limiter a bit....'er I was one of those drivers. I'll be nicer to the engine in the future...I guess MWR took credit for the head letting loose and really treated me very well in rebuilding the engine, so I'm pleased with them and their services and will use them again. When running the engine that hard, stuff happens and it was cool that they stepped up...
Anyway, the engine fragments ended up in the M62 and ruined it. FWIW, there were several other guys at the track that witnessed the whole deal (Darksol, Babak, and some guys not on the forum). So between the guys at the track and the trashed m62, there's plenty of proof that I was not running the TVS when the motor died...

Hope that helps.

Best,

Phil

[Matt in Houston]

Notice the AFRs at redline....Did you replace the fuel pump yet? If not its the damn fuel pump...I wish Lotus had used a bigger one from the start, but I guess for the stock n/a motor it was fine....was.

At near redline with that kind of power I would like to be as close to 12 as possible for safety, at the most 12.5...it appears over and over again the stock pump just wont let that happen.

Congrats, dyno power is looking good!

[turbophil]

That is an awesome pull Dave!!! Congrats! See, I told ya'll the stock compression would make more power than mine did

I see we have a little AFR tail at the end. I'll see if there's room to fatten the tune up at the end of the run to see if we can get rid of the AFR tail with the stock pump. If I can muster the time, I'll head to the dyno tomorrow and play with it a bit...

Matt, Dave is running the stock pump and so am I. We (Jim too) have the 255 pumps ready to install, but we all thought it would be good to gather some data to see what the pump will support with the 550s. I'm going to make an effort to install my FP gauge tonight or first thing in the AM for some logged FP data. I'll also try to tune that AFR tail out tomorrow. Obviously, if I can't tune the tail out and/or FP is falling off a cliff, it's time for a new pump--- And perhaps it's time for a new pump regardless I just would really like to know what the stock pump can do in real terms rather than theory... I'm close to Missouri, the "Show Me" state

Best,

Phil

[Bavarian Motorist]

Great run Dave... It goes without saying: That's a monster increase over your previous set-up. This is FF275-like power!

[Bavarian Motorist]

Just wanna add: What's most impressive is that you did 5 pulls in just 20 minutes and the temps stayed cool. That's amazing.

[ozracer]

Bavarian yes that is impressive but i would be more impressed to know what they did at the track temp wise?

Has Charlie X said definately that he wont do a tune for this set up and is aftermarket ecu the only way to go?

[jim-clayton]

Nice Dyno Dave. My Dyno will be next week. My Dyno guy was at PRI this week.

I'll probably pull the engine right after the dyno. She needs a new clutch.

May as well throw in the low compression pistons too.

We may see some big numbers posted later today if Phil makes it to the dyno.

I must say the car is wicked fast right now. The drivability is very very good.

The new torque really makes it a pleasure to drive. Too bad I toasted the clutch at the drag strip. I think the clutch would have been okay on the road course.

[Bavarian Motorist]

Originally Posted by ozracer

Bavarian yes that is impressive but i would be more impressed to know what they did at the track temp wise?

Has Charlie X said definately that he wont do a tune for this set up and is aftermarket ecu the only way to go?

Lol I doubt there are any track days in Ohio right now

[turbophil]

Hi Oz,

At the track, on the street, on the dyno, etc, the TVS runs 60-70F cooler than the the M62 at 10psi at under similar amb temps. That delta widens as the boost goes up and narrows as the boost goes down...

That's really all there is to it. There's not a real friendly way to post data logs that I know of or I would. Since everyone's data logging equipment seems to vary by like 30-50 degrees, it only makes sense to show deltas, IMO. The above deltas are what my racetech logs show me. The TVS data from Eaton shows that the TVS has about a 20-25% degrees in parasitic drag as well. When you put all that together, you have a more efficient blower that will allow the engine to lay more power down to the wheels under all circumstances. The TVS is vastly more efficient than the m62 and there are 3 lotus's and a whole pile of Cobalts that have found the same thing...

I hope that helps.

Best,

Phil

[EliseAtLeast]

Phil, I might have missed it but what are the plans for the 2007 Exige S or there isn't any? I'm now kind of regretting that I traded in my '05 Elise for the Exige Anyway, your TVS kit is amazing

[Bavarian Motorist]

Originally Posted by EliseAtLeast

Phil, I might have missed it but what are the plans for the 2007 Exige S or there isn't any? I'm now kind of regretting that I traded in my '05 Elise for the Exige Anyway, your TVS kit is amazing

I believe he is making it for the Exige S also!!

[EliseAtLeast]

Originally Posted by Bavarian Motorist

I believe he is making it for the Exige S also!!

With the intercooler, it will have even more power ? But the ECU tunning won't be via a reflash right?

[dma550]

Originally Posted by ozracer

Has Charlie X said definately that he wont do a tune for this set up and is aftermarket ecu the only way to go?

Wondering this myself. I don’t think I want to go aftermarket EFI if I can avoid it.

[EliseAtLeast]

Originally Posted by dma550

Wondering this myself. I don’t think I want to go aftermarket EFI if I can avoid it.

+1. Ideally I would just want to swap out the SC and manifold with the TVS unit and reflash the ECU and be done. Like I said, that would be ideal, real life usually isn't

[Bavarian Motorist]

Originally Posted by dma550

Wondering this myself. I don’t think I want to go aftermarket EFI if I can avoid it.

You won't have to

[Murix]

I am sure Charlie would be more happy to tune a TVS blower if someone is willing to pay all hist costs. Travel, dyno, services, etc. It won't be cheap nor should it be.

[Bavarian Motorist]

That won't be necessary unless you need a customized tune.

[EliseAtLeast]

Originally Posted by Bavarian Motorist

That won't be necessary unless you need a customized tune.

Are you saying that Charlie will have a generic tune for the TVS kit?

[Bavarian Motorist]

Originally Posted by EliseAtLeast

Are you saying that Charlie will have a generic tune for the TVS kit?

No. But I'm sure someone will. Phil is a smart guy; he knows only a handful of folks have EFIs and the vast majority want re-flashes for simplicity.



He mentioned it earlier in this thread even.

[luxige]

Originally Posted by Dave

OK, check out the factoids...

This is run 5 of 5 (first 2 pulls blew the sniffer out ) and were done within 21 minutes, first to last. This last pull was the best of the 5 so this blower resists heat soak like a freezer! Dyno room ambient was 71F, stock fuel pump, 3.2" MP62 pulley comparison.

I set the rev limiter down 300 RPM over stock for safety while testing...it would have gone passed the 280WHP mark easily at 8500, but no need to push. Using Phil's Bravo2 map, max boost was 11.24. Graph is super-linear too.

That is the most beautiful torque plot I've ever seen... (sniff)

Did you draw those graphs with a ruler?!
Great work, very exciting.