TRD Supercharger vs AVO Turbo Results

[sleeoffroad]

Wanted to post this information for people that like tech stuff.

We dyno'ed a 93 80 Series fitted with a TRD supercharger. The truck has 4.88 gears with 35's. Dyno was a 4wd dyno in Parker. In addition to the supercharger the truck was fitted with a Toyota Supra fuel pump and FMU (increases fuel pressure as boost pressure increases). Supercharger runs stock boost from TRD (5-6psi)

Figures for the supercharger are the red lines. All figures are shown at the wheels.

The supercharger was removed and we installed a AVO turbo/ Intercooler system. Exhaust was also changed to a 3" mandrell exhaust all the way. The FMU was removed. The AVO system uses two additional injectors and the truck was tuned using a piggy back computer. Boost was set to 5/6psi

Figures for the turbo are the blue lines.

This should give people that debate SC vs Turbo some info.

NOTE: This was on a 93 truck. I suspect a 95 or later truck with the SC will yield some better figures.

It also opens a lot of questions, like would the SC perform better if tuned and extra fuel delivered. What effect would intercooler have on SC etc etc.

 

[acolella]

Is the Turbo Carb certified?

 

[PabloVTA]

Was the S/C ran with the 3" exhaust as well? or just with the Turbo set up?

 

[cruiserdan]

Was the S/C ran with the 3" exhaust as well? or just with the Turbo set up?

Re-read Christo's post.

The exhaust was added along with the turbo.

 

[cruiserdan]

So, Christo,


How does it "feel"?......

 

[sleeoffroad]

Is the Turbo Carb certified?

Turbo is not currently CARB certified. We are doing low volume local installs.

 

[sleeoffroad]

"feels" way better. Owner reports 13.5mpg normal driving and for the first time the truck runs like it should from the factory. The truck has front and rear bumpers, roof rack, drawers, dual batteries, slider, aux tank etc etc.

The supercharger just never cut it for him.

 

[sleeoffroad]

Here is a picture of the goodies

 

[cruiserman]

How about a plot from a stock rig?

 

[sleeoffroad]

That is next on the list. Catch is I want to get one that is simmilar in setup re: gears, year and tires.

 

[apcoleman]

That thing looks bad ass to say the least.

 

[John E Davies]

Thanks Christo.

Why does the power drop below 2150 rpm - did you not bother to measure that low? What sort of power does the turbo give at, say 1500 rpm? Is it even providing boost that low?

In other words, how does the truck do lugging on the trail or up a boat ramp?

Thanks.

John Davies

 

[trojan_knight]

it isn't on your site. how much $$$. i live in wyoming so emisions is no matter.

 

[ats4x4dotcom]

My turbo cruiser would lug along at 400 rpm very nicely, because airflow gets to a minimum but fuel and air is continued to be pushed in, making for great low down torque, that beats the S/C hands down.

Mine ran 10 psi boost.

Thanks Christo.

Why does the power drop below 2150 rpm - did you not bother to measure that low? What sort of power does the turbo give at, say 1500 rpm? Is it even providing boost that low?

In other words, how does the truck do lugging on the trail or up a boat ramp?

Thanks.

John Davies

 

[sleeoffroad]

The dyno run was done in 3rd gear, so the dyno runs were recorded with the truck already rolling. One attemps to dyno at 1:1 gear ratio, so if you try to start at 1500 rpm on the dyno, it will downshift to 2nd gear.

The vehicle can only be put under load at 1500 rpm in 1st gear, all other gears will downshift to a lower gear. With no load the turbo won't spool.

The AVO systems are in general set up to provide usable power at highway cruising. To get power at very low RPM's a smaller turbo would be used but excessive heat would be generated at higher rpm. Smaller turbo's will not have the flow to give the power at higher rpm.

For pricing call us at the shop.

 

[cruiserdan]

For pricing call us at the shop.

Remember folks: Speed costs money, how fast do you want to go?

Prepare yourselves for an installed price that will approach the current purchase price for early 80 series vehicles. If over 5 grand scares you, don't bother him with questions...

 

[Rainy Day FZJ]

And some of us are figuring out you better have the trans mods to hold up to the power, ie forced induction. { hijack off } Looks like a nicely done kit. Of coarse I don't think that I leave it alone once aquired....

 

[concretejungle]

Very cool Christo, thanks for posting that. Two things, one, do you think that a newer fzfe (think 95+) would produce higher numbers?

Also, do you need a 95+ rig to test the turbo on? I know where you can borrow one for a while

 

[Dusty]

220 hp and 320ft lbs at the wheels at 3500rpms with 35" tires = hemi eater. those numbers are perfect for running up I70. On my xmas list

 

[Curran]

Christo, thanks for bring some data to the discussion. I wish I the the spare funds to ship my truck out to you for a few days! That would look sooo sexy under the hood.