Real difference between original Coldside and the FFS coldsi

[Tom @ Fast Forward]

If you want to know the real difference e-cool does on a 99/00 it is like going from 170 to 210. Ari has posted his dynos (4 different iterations) on the dyno page. I have now shipped him a new MP62 to replace the ported one he has now that lost power due to the porting (anybody want to buy a BRP ported MP62 Coldside blower?). As soon as he installs that we will re-test with his add on e-cool and he can add another line to his dyno graph. I am betting it will easily cross 200 and he is now somewhere in the 170s after all that work. Stay tuned.

Did I mention "Does anybody want to buy a BRP ported MP62":?:

[Tom @ Fast Forward]

Dyno

http://www.FastForwardSuperchargers.com/Ari-Dyno.jpg

[Wayne-n-Fla]

Never noticed before, but he lost 15 Ft./Lbs. of torque after HIS porting job ??? but with his porting, an unported S/C and E cool I'll say 212 whp in AZ w/91 gas and 217 in ElPaso on 93 gas.

[Tom @ Fast Forward]

That's actually a false torque number from that glitch on the torque graph. Sometimes that happens on a dyno run. you have to ignore that peak number and look at the norm of that torque graph.

[99mx5]

the max values for that run are 172 WHP, 138 ft/lb torque.

[pat conlon]

Hey Tom and others, could you enlighten me?

What was BRP's thinking in porting the MP62?
Originally, when they first started doing this, I recall they were pretty excited about it. Didn't they see gains, or was that just on their hotside kits? Or did I dream this?

So, porting is no good on the coldside kits, but on the hotside kits? Or, is porting the MP62 is a no no in all cases?

Thanks for the help folks.

Pat Conlon, Palm Desert, Ca.

Tom, next time, if you have the time, and you're jamming on the I-10 by Palm Desert, give me a call and I'll buy you lunch or dinner.

[Tom @ Fast Forward]

Pat, I will galdly take you up on a free lunch or dinner. Food always gets my attention. :) One of these days your car will sport one of our kits, I just know it.

I guess my opinion is that Eaton has probably spent 10s of thousands of man hours perfecting the flow through that blower. Getting it down to minute changes to max the flow and minimize the heat. I could see polishing those in and out edges to smooth out the flow as they are simply machined edges. However, making massive changes to the shape of the intake and outlet of the SC without hours and hours of flow bench testing is .............. I think I saw a couple of hotside posts that also had a loss of power after BRP porting. BTW, they appear to no longer offer porting on their website.

Just for the record, our BTB adaptor is computer flow matched to the MP62 intake port. That is the reason it is cast instead of machined. It is almost impossible to machine that internal passage going from the round TB to the butterfly shape of the SC.

When I get the ported blower, I'll post pictures so you can cogitate on it yourself. Right now I can only guess at what it looks like as all I have seen is the results.

[Mathrips]

I am champing at the bit to see what the non ported blower does with the e-cool. Heck it will be another 2 weeks at least before my motor is back together, I have to get my new stuff on the car fix from somewhere.

[Curiousgb]

What kind of A/F ratios should you be looking for? It seems that the dyno run is running what 11-11.5. I know BRP recommends 12.5. Is this a difference with the Ecool?

[Tom @ Fast Forward]

I typically like 12:1. We don't have the priveledge out here of cool temps (under 100F) and 95 octane like they have in SC. We need to make kits that work anywhere without ping. I would not worry about fuel above 10:1, personally, but we mormally end at 12:1. The charts of my 99 in the dyno forum are 12:1 PRE-CAT. Most consider post cat to be +0.5 so that would be the equivalent of 12.5:1. However, I typically add a bit of fuel after making the runs. Another 1/2 point will cost you a couple WHP (2-3) but can save your engine. A little rich is WAY better than a lot of ping.

Chuck has a base hotside at ~173WHP non-intercooled. He tried all the ELF settings. He set the fuel potentiometer to 10 and no avail. We added a bit of fuel (now about 10.5-11) and no ping. He will now take fuel out of the ELF and see what happens. He will probably get back to 12:1 but, with sufficient fuel coming from the E-Cool to solve the ping at the same time. We just ran out of dyno time to do it there. In any case, my preference is 12:1 or even 11.5:1 if necessary to make the car safe under all conditions (like Arizona).

[99mx5]

I posted my initial dyno runs at the BRP forum and spoke to Bill and Brant on separate occasions about the fuel curve. They both told me that my fuel curve was good. It took lots of dyno time to determine the settings to get it as it is. I hope to do more tweaking on the P2 ELF setting to see if I can smooth it even more. All my later runs have A/F ratios that are close to my initial runs.

[Curiousgb]

Please tell me where in SC there is 95 octane. Best I can find is 93. Unless I want to spend 6+ buck/gallon on race gas (is race gas leaded?).

[Tom @ Fast Forward]

I thiink the station was "Alero" or some name like that. it was an odd name like that. i kind of remember reds and yellows in their colors but not sure. It was a long time ago.

[Tom @ Fast Forward]

Could it b e Spinx Fuel? I just can't remember the name. It was, to me, an unusual name. IOW, not Sunoco, BP, Shell, etc. I think it was on Woodruff around 385. Over near the company where James works. Some race fuel is leaded and some is not. Around here you can find VP101 that is not leaded. $6 gallon is what it costs. Typically available at the race track. We do have 2 stations around Phoenix that have it at the pump. One station is near Firebird Raceway. On Friday nights when the 'Street Drags' are on, the line at that one pump can be 10-20 cars long. ;) I suppose I could test on that and and call it "pump gas". :)

[raceskier]

Tom,

BRP is about to release the ELF software update that will include the extra injector/WI control. Since they have been using the SS AIC1 previously, I would assume the ELF will mimic its capabilities. Would it be reasonable to copy the AIC1 map you are using for the manifold injector to the ELF and eliminate the need for the AIC1? (Just being cheap here.)

Also do you know if anyone ever tried the back to back stock vs ported blower?

[Tom @ Fast Forward]

Ari had the stock blower then the ported blower (lost ~6-7 WHP). He is installing a new stock blower today that I sent him. He will come back out to see what it will do.

I would guess if the ELF has an RPM vs. Boost map it might port over. Somebody told me they were back to offering the SS again with a 5th injector. Guess they don't think it is fuel dumping if they do it. :P

[99mx5]

Blower is in the car. Jumped right on it after work...
Now to the dyno :)