Low Boost 5psi daily driver
 

my friend like to supercharge his street car.
The car mode :
El 4-2-1 non- catted header
Non-catted front pipe
High flow Catback
E85 fuel stage 2

He think 5-6psi boost in non intercooled setup will make 270bhp.

Any idea?

Why would you not get an intercooler? Especially if he's near Tehran... it's kinda hot out there....

Also, what supercharger are you looking at? Jackson Racing, Kraftwerks, Sprintex 210/335, Edelbrock, Cosworth, HKS??

The cost is not important, we guess cosworth is not bad but we have no idea about other kits.

We prefer non intercooled If it is possible but we hear your ideas. Tehran in summer is hot around 100F . Lotus use non intercooled 11.7CR 5psi no problem in tehran.

The Sprintex 210 kit is low boost and not intercooled.

Does Jakson Racing or cosworth has no intercooled version?

They're both intercooled. Cosworth uses a water-to-air while JR uses air-to-air. I'd still go with the intercooler if I were you, and if cost isn't a factor. Less heat soak = better performance.

Have you even checked out any of the superchargers? Edelbrock just released their supercharger and seems to be very promising.

This is not a Lotus motor.

Specially since cost is not important, get an intercooler and an oil cooler.

I guess cosworth be better on paper spec but i have no idea about jakson racing

I did not checked edlbrock but between blowers i guess jakson racing and cosworth be good.

I can understand the debate to why one might not purchase an oil cooler (assuming this is just a daily driver and not being tracked). I cannot understand the debate of why one wouldn't run an intercooler while purposely jamming hot air through your motor. especially when cost is not a factor like sportsguy said.

Go harrop

We use hks oil cooler kit.
Do you have any idea about power gain in E85 5psi boost if we use intercooled version?

No problem , we do that , i just like to hear ideas :-)

It seems the Harrop is new , correct me if i think wrong , i did not find any review about that

If cost is not an option and in your climate definitely get both an intercooler and oil cooler, even at 5psi.

I think Jackson Racing is the one you might want to be going. So far I've heard nothing but good things about it.

You can't go wrong with either. With your friends current set up, they'd both be fine. But they are different types. Cosworth is a PD and JR is a centrifugal. But JR has a lot of good reviews. I have a Cosworth so... I'm a little biased haha.

Cosworth need no oil and it looks more beautiful to me.
PD are good on low to mid on paper and for 270bhp i guess low should be fine .
Cosworth use eaton , we know eaton is a good company , overally cosworth has more stars on paper but in real world we should hear customers experience.

Technically is does use oil. Cosworth just claims you don't need to change it for some 50,000 miles. But compared to others, it doesn't use as much. HOWEVER, because it uses an A2W intercooler, you do have to keep tabs on the coolant reservoir. It uses a mixture of 25/75% antifreeze/ water.

It has positive reviews in this club and i try to find most reliable kit because we do not need extra power at 270bhp

Also, I've only had a few issues, which are mentioned in my build thread. But nothing catastrophic.... yet. Also, I'm running of Cosworth's base 2.3 tune. For you, you'd need a custom tune.

But the thing is with the jackson racing is that they do offer a higher boost pulley just in case in the future you want to run more boost.

Did you had any problem before and after installing cosworth?
Did it had clean fitness?

Yes , we should use E85 custom tube by our tuner Mike (moto-east) with 5psi

Sometime we think 270bhp is ok and no need to increase it but in future we go to change the boost. I'm not sure about future but i guess my friend stop it.

Everything fits great. The issues were with the tune. Like the cruise control causing a CEL because of some wire possibly being pinched. The other was something about running lean, but I think that's because I didn't tighten the charge pipe clamps good enough when I changed the air filter.

Oh, yeah the smaller pulley with the JR kit is a nice upgrade option. And with your set up, plus E85 and a smaller pulley you should easily get passed 270 hp. Not sure if you mean at the wheels or at the crank. Either way, it should do just that.

I mean 270bhp = 240whp (dynojet) . We guess 0-60 time drop to 5.5 seconds with proper tire. The car is AT with FD 4.88
Tune is not important to me because Mike is great tuner and he correct it remotely

Oh... well hell you'd get that easily. You wouldn't even need E85.

Pump gas research octane in tehran is 90 or lower.
I guess We can not make power more than 240bhp with pump gas.

on E85 and a custom tune to take advantage of this a Cosworth kit should fly, I'd love to see the result of this as I don't think anyone has run E85 with this kit yet

hey! I'm saving up... be patient :D

I think proper tuning (good cam , stable afr , zero LTFT & proper timing) ,low boost linear power , sharp response CL driving with E85 , extra 70bhp will make this car better in comparision with high boost high power turbo.
I think 270bhp is good and no need to extra power

I'd say you'll probably get your power target using the cosworth kit as it is
just fit a decent exhaust

We use full hks from header to exhaust end

To say it is not a lotus motor is to say this is not a toyota motor...which is kind of funny because you are clearly talking about a Toyota GT86 over there haha.

Oh the Lotus..such a fine build of a toyota motor.

Right so unfortunate that we have a Subaru motor not a Toyota motor

GOOD!

Really? Man, Toyota build motors are amazing...