Better work on those triceps Geoff. Don't forget to clamp your work piece

 

http://forums.nasioc.com/forums/show....php?t=2041557

7670 results

 

Give me a better link... Those are 35r results. I'm not searching 35 pages of dribble.

 

very nice results but maybe i expected more. can you explain why a 3582R can do near 600 on pump gas at 30psi and not drop off boost like this did. i expected this turbo to live up to its hype. i kept reading it was supposed to destroy a 3582R.

 

^ Youtube's voting function would be awesome on forum software, if enough people "thumb down" posts which were clearly the result of lacking to read or think before posting then the posts could be hidden so we could thin out the amount of unnecessary reading it would be grand.

I am a little underwhelmed by BW results vs hype so far too, but only by reading everything that has been offered and being a realist about it. I am sure that this turbo is able to hold 30+psi - it just needs an appropriate wastegate setup. I look forward to seeing the next stage of results, at this stage its too early to make a call on whether the result is a good one (or not) yet imho.

 

take it easy my friend. i only asked a question. i understand the WG needs to be changed out but the new HTA86 from FP is making 600ish on pump gas at 30psi. geoff is running C16 i just expected a much greater gain. at least a 20hp difference. IMO his setup is sweet with top quality parts chosen. i just was shocked to see mid 500s on c16 and 30 pounds of boost. that is why i asked.

 

a GT35R uses an external 2 port wastegate, this means you can have a stiff spring with large range of boost adjustment.

My IWG efr setup has an internal WG and the spring is too soft. I will put a new WG spring in it and redyno - it will hold the boost, you need not fret. I wasnt interested in impressing people on the forum, just trying to get my car running and share results. keep in mind its a 2.0L with stock port cyl head, theres no chance in hell of a 2.0 hta86 spooling like this

it was only holding 26 psi, did you read the post?

too bad you have only seen forum posts, its impossible to come to any accurate conclusion that way. If you went for a ride in my evo and actually felt an EFR turbo instead of stare at dynocharts ad nauseum "underwhelmed" would not be on your mind

 

geoff i do not mean to come off as a mean person. i am asking questions thats all. so i hope you do not take it the wrong way that all.

you said it hit 30psi tapering to 26. once you fix that problem i still think on c16 this thing should be well over 600 at 30lbs of boost. i understand you do not want it on a kill platform but your the only one who is posting results of this turbo ''that is worth reading and understanding'' why dont you just show what this thing can do so we can get a better idea how it stacks up agents the HTA86 type turbo. then just turn the tune down to where you like it.

 

thats just our standard twinscroll turbo kit, the TS EWG EFR is what sierra sierra, evasive, and leetevo run

evilevo, i will turn it up. just taking it easy for a couple weeks while i break in my car. give me a few days!!

edit: the data i think will become most interesting is *Turbo shaft Speed* vs *Engine RPM* ... too bad you HTA and precision guys cant get this data

 

Someone needs to invent a "feel/response" dyno chart then the guy in the street will understand. All most see is bhp and boost

 

believe it or not, auto mfgs go by "Feel" when quantifying response. I have 2 friends who are prototype test drivers at the Nissan proving grounds facility here in AZ, they literally measure Turbocharger response by "feel" on their test track when evaluating

 

Fixed that for ya.

l8r)

 

Mr Nissan doesn't demand boost charts?

 

I think T90 times are more the standard in testing for performance calibration/validation. Less qualitative... more quantitative. The corporate guys who come and drive the final calibration can rate the performance based on their feel, but the engineers back up their "feelings" with data.

We (and by we I mean the company I used to work for) measures the time it takes to go from WOT until the engine makes 90% of peak torque. We do this at a wide range of engine speeds and it gives a response curve based on engine speed and time. That is a quantitative way to measure transient response.

 

I agree, and made it clear thats all the info I am going by and realise the difference. The trick to that is that on the most common benchmark, the results so far are unremarkable using that method. If BW and associates had ensured they had their stuff sorted before taking orders etc then I'd not feel like I'd have been waiting so long to know for myself how they behaved in real world conditions. The reality is that I was next to sold on a twin scroll EFR7670 in January last year, however I wanted to see how they went in the market and ideally experience one for myself. As it turns out, its taken over a year longer than I expected so far to get to the point anyone I know has received one. I am VERY glad I waited, then aborted the idea.

The EFR8374 on yours sounds like its awesome so far, but given the power levels etc are more in the territory of what a 3076HTA could potentially make on race gas then until we see it make GT3582R, or GT3586HTA power levels I'm not going to bother considering them as what I should be comparing it with. This is in no way indicating that I don't expect it to, I just take each bit of info as it comes - if it makes GT3586HTA type power with the spool it is showing then my mind will be officially blown, without even experiencing it first hand where it is claimed to be where the turbo will come into its own.

I don't have a grudge against these turbos, just the info I have to work with on them so far is not the most flattering - yet, if that situation changes I assure you I'll say it like it is too. Look forward to seeing how Ben in NZ's GTR running an IG TS 8374 goes