Full throttle Electric Supercharger Build Thread

[fenton]

I'll try to get a video with him soon

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[Fast_Freddy]

Originally Posted by fenton

I'll try to get a video with him soon

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That would be great but it might be even better if one of the other testers does it closer to sea level. I'm not sure if there is a widely accepted correction factor for acceleration loss at altitude.

Interested in those DTCs. I'm thinking a simple voltage clamp might stop that CEL.

Edit: Just saw this...

Originally Posted by fenton

There is no solution as of yet. Problem is the system is so far outside the stock load tables at low rpm it freaks out. We tried a map clamp but that didnt work. The maf reads so much air down there it doesn't know what to do without a tune which is to be expected

...or not. I may be wrong about the tune anyway. I'm not used to people being so willing to spend $750 for a meager 10whp gain and a little DBW enhancement but 86 owners don't seem to mind at all.

[Fast_Freddy]

Originally Posted by Dustin2JZ

The 17:1 AFR was with stock tune and NO SUPERCHARGER. as in it was getting 17:1 Bone Stock. (probably because of his higher altitude)

after adding the super charger with the stock tune it put it at 12:1
Sounds safe to me.

Impossible. Stock tune AFR will be roughly 12:1 in open loop and 14.7:1 in closed loop, without fail, every time, no exceptions, PERIOD.

[FT_Monk]

17:1 is possible when throttle lift off, don't know the AFR was measured with a wide band.

[Dustin2JZ]

Originally Posted by Fast_Freddy

Impossible. Stock tune AFR will be roughly 12:1 in open loop and 14.7:1 in closed loop, without fail, every time, no exceptions, PERIOD.

Just going by what Fenton posted.
Seems quite high to me too.

Fenton & Rob. We need clarity please

[Wonderbar]

Originally Posted by FT_Monk

17:1 is possible when throttle lift off, don't know the AFR was measured with a wide band.

That's on lift, not throttle. If that's on throttle then something is wrong.

[fenton]

Originally Posted by Fast_Freddy

Impossible. Stock tune AFR will be roughly 12:1 in open loop and 14.7:1 in closed loop, without fail, every time, no exceptions, PERIOD.

This was read from the tail pipe and not sure how accurate that is as I had a small exhaust leak.

The Afr can be read on the first page we did nothing to alter it just flashed the stock tune.

Visconti's tune ran 14s all though the torque dip.

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[Wonderbar]

Also, something that is widely discussed by tuners is that leaning our car out doesn't produce any more power. Better results are coming from a bit richer with more timing.

[fenton]

Originally Posted by Fast_Freddy

That would be great but it might be even better if one of the other testers does it closer to sea level. I'm not sure if there is a widely accepted correction factor for acceleration loss at altitude.

Interested in those DTCs. I'm thinking a simple voltage clamp might stop that CEL.

Edit: Just saw this...



...or not. I may be wrong about the tune anyway. I'm not used to people being so willing to spend $750 for a meager 10whp gain and a little DBW enhancement but 86 owners don't seem to mind at all.

Voltage clamp won't work to my knowledge. Maybe Rob has came up with something but the map clamp which bled off the boost did not work.

We are dealing with dramatically different airflow at that low rpm.

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[FT_Monk]

It better be tuned at the specific RPM when the charger is engaged, or risk melting the DI seal or other engine problems.

[Dustin2JZ]

Wouldn't it be better to lower the toms of the super charger to reduce psi below a certain engine RPM

[fenton]

Originally Posted by Fast_Freddy

We have our answer, thanks to Rob. Not a big deal but I think it best to drop the "it'll make much more power at sea level" nonsense. I have nothing vested in this e-charger one way or another but simply for the sake of factual accuracy I am compelled from time to time to attempt to correct certain exaggerations and falsehoods. I've seen quite a lot of speculation recently that this e-charger will produce 230+ whp in the near future, @MSL, with exhaust mods, etc. and I think it best for all concerned to squash such BS quickly. Exaggerated expectations like this will only lead to disappointment and this thing is impressive enough without fantasies of it magically matching the more expensive traditional offerings from Innovate, Vortech, AVO, etc.

The simple point is the power being made at 1.6 psi on a otherwise stock car.

Its not at all a stretch to say we might make another 20 hp or so with some supporting mods or a little bit more boost if it is possible. Just look at the vortech unit with a FA20club header, huge gains.

I could see you calling me out for BS if i was saying >250 with exhaust mods.

Just as an FYI when we hooked up an additional battery(2 very small ones) we made 210whp but Rob didnt want me to post that one as he isnt sure if the packaging will work as he likes.

All information about the kit is being shared freely here, i will wait for @Toma to answer the dyno correction questions.

I believe there are some guys at Sea Level that should be getting the kit soon and i hope to see them post up here as well

[Robftss]

1. AFRs on first post:
Highest is 16:1 not 17:1 on completely stock engine.
Fenton had a couple washers on the muffler flange as a noise maker, the O2 sniffer was reading off ~ +1 point because if this. Proper reading were attained on the 2nd dyno session with the washers removed.

2. Stock tune with boost activated was 11-12 everywhere so the MAF read additional flow and richend up very nicely and very safe.

3. Check engine light @ 3000 rpm tripped by ECU, Fenton had 2 codes relating to the transducer and a load calc. No intervention made by ECU , Ie timing or knock etc. , CEL off shortly after. Toma modified trip with Brz Edit.

4. Below 2000 rpm, rich and timing pull. An rpm window switch to deploy boost ~ 3000 rpm would ensure stock tune operation. A NOS window switch, which there are several available, can be installed as per the instruction of the manufacturer of the device the same as you would a NOS system.

5. Toma's tune provided 12-13 AFRs with BRzEdit.

6. Correction factors are for outright numbers only. The only important info from the dyno is the delta gains in % from stock to mod at various rpms. This is what the driver will 'feel'.

7. Comparing 1/4 mile times has to be done with the same car same place same time to be valid. 1/4 mile or any timed performance done a two different relative densities will be not comparable. A stock FRS will do 17 sec in Denver and 14.5 sec at SL (very approximate).

[Toma]

Corrections? Tough call on that one. They were never intended for forced induction applications. Depends on what the supercharger does I guess.

I won't predict an outcome lol. Interested to see what happens.