This car belongs to Jonathan of Rock Hill, SC. He brought his setup to us for an E85 tune on Crome Gold and boost by gear install.

Here is Jonathan's setup:

Log Manifold
50 Trim Turbo
2 1/2" open downpipe
Electronic Boost Control Solenoid
Turbo XS BOV
Turbo XS Wastegate 38mm
Intercooler

Walbro 255lph
880cc injectors
B&M Adjustable FPR
E85 (base fuel pressure @ 52psi)
GM 3 Bar MAP Sensor

B18C
9:1 Mahle Pistons
Eagle Rods
Toda Springs & Retainers
ITR Cams
Edelbrock Victor X Manifold


The wastegate wouldn't hold boost steady. AT around 6.2K RPM's it hit 18psi and tapered down to 14psi by the time it hit redline with some fluctuation along the way, hence the power/torque waves. This was on 3rd gear like the majority of other setups. For those wondering, 4th gear yields a/f rations that are roughly .5-.7 richer.





CLICK FOR VIDEO!!!!!

 

Nice numbers.

 

Courtesy of E85. Usually yields 10-15% more whp and torque over pump 93 octane.

 

very nice!

 

great numbers

 

why not a 3inch downpipe? and good numbers man, any track times?

 

Looks as if the hot side of the charger has a 2.5 inch outlet. Im in the same boat but I fabbed up a downpipe that goes from 2.5 directly to 3 inch. Im sure it will have similar results to a standard 3 inch downpipe. To the op, you should try this. It will give you a few more ponies in the end.

 

the "ponies" is an after effect. The biggest benefit is less backpressure in the exhaust system for the turbocharger to be more efficient.

 

Wow.. great stuff.. I was going to go do e85.. but I chose water/methanol.... was the 50 trim maxxed out LOL

 

good numbers. Im hoping to put out 350-400whp with the same turbo and a stock b18c and E85.

 

figure a 3inch downpipe would spool that turbo faster than the 2.5

 

Anyone know what it might have made with the same boost on 93 pump? just curious

 

hey spent why do you think that 4th gear pulls are always richer? i noticed that myself cruising through my datalogs.

 

what boost was ran in each gear?

 

you sure that lil turbo wasnt just maxed out?

nice power

 

2.5" will generally spools faster. 3" will generally yield higher numbers.


10-15% less.

It may have to do with a "gear vs fuel enrichment" table hidden in the ecu. I've seen such tables on non Honda ECU's and it wouldn't surprise me if Honda had it as well. Regardless, it makes sense to run richer at higher gears due to higher levels of heatsoak since it literally takes longer to reach redline vs a shorter gear. E85 is significantly cooler than 93 octane so it stands to benefit even more.



For those who are not aware, taller gears load up the car faster (a.k.a turbo spools faster) but usually after 5K rpms, the load (psi) is the same for most cars regardless of gear.



He is running 18psi in all gears but keeps fluctuating down to 14psi by redline..... . He has plans to replace exhaust manifold for a tubular design and possibly a different wastegate which should allow for more exact control of boost by gear, and more power at the same boost levels.


This turbo can be ran efficiently to 22psi. Anything past that and you're just blowing hot air, especially on a log manifold. A nice tubular manifold would probably allow for an extra 20-40whp (keep in mind we are talking about E85 and not pump gas) at his current boost settings. I believe on a tubular manifold design with 22psi, this setup could possible hit 500whp on this 50trim with E85 which is not bad at all.

 

You gave me hope for my 50trim.. but I am on a 2.0 gsr...

 

50 trim and 400hp with 2.5" dp is pretty much maxed out which explains the boost going down (atleast thats what i would assume)

 

^ 2.5" OPEN downpipe. It's not a bad assumption but you are thinking pump gas and not taking E85 into consideration.

What you mentioned plays a role but it's a smaller role vs the greater effects of the log manifold design and the wastegate.

Thanks for your input.

 

damn I thought 880cc injectors at 400whp on E85 would be maxed out? I have a walbro 255 pump and 900cc's at what power level should they be closed to maxing out on E85? Spent do u guys sell drums of E85 by any chance? I wish they had more in the North Carolina area:/ Been reading up and alot of people are claiming running E85, E98 or even E100 is better than C16 and any race gas out there. Care to put your 2 cents in on that, cause I see u tune alot of cars on E85.

 

You cant get E100

 

my setup will be slightly different. I just need to finish getting it together and get it on.

Pfab log, Turbonetics Evolution 38mm wastegate, BOV(ebay most likely), 3in DP, 50 trim, RC550s, 1st gen Skunk2, Polarbeartuning.com 74mm TB, E85

Stock JDM GSR with ARPs.

 

i local shop around here claims to have used it...

 

fixed that for you. either the turbo is maxing out or the ebay wastegate isnt functioning properly. my bet is on the latter.

Very nice setup, but I would toss a Tial on there for good measure.

 

Sounds cool if true. Either way e98 is close enough