Originally Posted by cirpower

Hi all

where on the ATP turbokit you can check which exhaust housing you got? I have also ordered a .82 housing, but am not sure if what I got is the .82 housing?

Thanks for your reply
ric

Originally Posted by EVOVII_SWE

There are only three VIIs in Sweden that I know of and non of the other two has any serious mods so it wouldn’t be any point comparing to them.

On the other hand I think the TME has a kind of almost mythical reputation especially in the states, not that hard to understand since they really aren’t available there. But the TME spec was not faster or stronger than the normal VI, it had lower suspension, different front bumper, different wheels, different interior but the exact same spec on the engine. When I compared my, at that time, completely stock VII on a dyno to a TME also completely stock I had almost 20hp more than him even if it had the 10,5 cm2 turbo and I have the 9,8. I see no reason why the TME should be that much faster than any other VI or VII or VIII with the same mods?

The TMEs her are RS2 versions with all the electrics, manual A/C, ABS brakes and AYC. My VII is also an RS2 with the same spec except that it also has ACD.

They also have the exact same gearing in 2nd, 3rd and 4th gear as the VII and the VIII so I really see no problem in this comparison. And as we started at 4000 rpms in 3rd I had full boost very fast but he did pull away slightly just as we floored it but then we were almost 100% equal until about 6000 where I started to catch up just a tiny bit up to 7000. Then when we both shifted the scenario repeated it self, he gained some on me and then I gained some on him but we are only talking a couple of feet here.

I never said this was a good way to compare but I should have like 100whp more than him and when doing such a pull I should blow him away. But we also know my car doesn’t perform as it should.

Originally Posted by EVOVII_SWE

Well, I don’t know if I’m strange in any way but I don’t see why you would buy a $2400 kit like this and then run 20psi? I would probably not have any surge if I only run 20psi but a stock turbo at 26-28psi would make as much if not more power. You need a certain amount of power to accelerate a certain amount of weight from, and to, a certain speed. That’s simple physics and all the g-tech power measurement devices use these laws, of course with some variables as gearing and air flow resistance.

As I have seen here my car seam to be very similar in power to Az3ar’s in terms of acceleration in 4th gear, he stated 7-8sec and I timed mine to 7sec from 4k-7k. My friends EVO6 which weighs only about 40kg less than my car but then also has more air resistance would easily do it in the same time and he is running stock turbo. And in that he also has a spool that we could only dream of even with the 3071, he would have full boost by 2800rpms, but he has the Ti 10,5cm2 stock turbo. If this is all the difference this turbo will make I would either have staid with stock or gone for the 3076 as the 3071 only seam a waste of money in that perspective.

I know my car doesn’t run 100% as it could/should but still it makes the run in 7sec. Something is seriously strange here and I don’t know if it’s the 3071 in general or my car in particular. I have to wait and see what the .82 housing will do and take it from there. It might be a mismatch with my other mods like the cams that doesn’t allow me to get the full potential out of it.

Originally Posted by gunzo

SWE .. even better to compare to stock to know what you have achieved from stock !

BTW I'm not from US .. over here, we have all the JDMs available ..so TME is nothing new.. just rare..

I understand you can make more power than the TME .. the TME is quite different from the STD VI .. the GSR/RSII has the TD05HRA15k2 .. not your standard 16G turbo .. that's why the quoted faster spool 2750rpms ..

You've already acknowledged he pull away from you initially .. but you gained back .. which proves my point that his initial area under the torque curve is bigger than yours .. and you start gaining later in the rpm ranges .. which means at that point your bigger turbo is making its presence felt ..

Don't feel bad .. also understand that your 71mm compressor housing is only 3mm bigger than the std evo turbo so unless you're slinging hi boost .. the TME will be always barking up your tail ..

Bet if you do a 1/4 mile run .. you'll find that TME and your car probably has around the same ETs .. but you'll trap at a higher speed .. (all things equal that is )

Originally Posted by Quickshift

Well over here 94 oct is what we get at the pump so I can only boost 20psi within a safe region. I will try C16 once I get a tuneable ecu. I am only running off the stock ecu with a S-afc for my fuel managment. My car feels much faster than the stock turbo. At 15psi on this turbo I was getting as much pull in the seat as I would with 21psi on the stocker. I dunno what you where expecting, the turbo isnt a big one. You will only be able to get so much out of it. If you wanted some serious pull the gt35 sounds like what you are wanting. In 4th gear it takes me about 5-5.5 sec to go from 4k to 7.5k on the rpms. Do you have any sort of aftermarket plumbing for the intercooler lines? or an aftermarket IC? also what is controlling your boost or are you running the wastegate springs? what type of gas are you using? Stock cat?Are you running a full 3in turboback exhaust with no neckdowns? just trying to figure out why

Originally Posted by Quickshift

So you are only making 50ish more hp than cars with the stock turbo on , but with what mods ? This is confusing man, what kind of dyno are you using?

Originally Posted by EVOVII_SWE

I guess it all has to be compared to what you have from the start and I start to wonder if I should have stayed with stock or gone for the 3037/3076 with the 76mm compressor wheel. Even if the 71mm is only 3mm larger than stock the housing looks a lot larger and I was looking at ATPs numbers of 375whp on a car with only a 3” exhaust, injectors and a flash. I managed 310whp when pushing it and as I said we had to back of even from that due to knock. On that same dyno EVOs with stock turbos have put out in the 260-280whp region and I have no more than 290 now and that feels like sh*t after spending $2,600. Once again, I have to see what the .82 turbine would do. It should help my surge issue, the exhaust back pressure issue which in turn could help the knock issue so all together it might work a lot better so I just have to wait and see.

Originally Posted by 2k4EvoVIII

If things dont work with the .83 let me know and i will buy it from you. It will be nice to have a Drag and Autox setup.

Originally Posted by EVOVII_SWE

Thanks for those encouraging words Chris



In that case it will be very cheap, I promise I hope I receive the .82 real soon though

Originally Posted by EVOVII_SWE

Yeah, distance would be an issue if you would like to come and help me

Paul @ ATP said he though they had the .82 turbine housings in stock so I hope they could have it sent really fast. He was also going to check if there is a surge ported compressor housing available for the 71mm as there is for the 76mm but I haven’t heard anything back on that. As soon as I get the housing or housings I’ll have it/them installed ASAP and it really only depends on when my friend have time to help me. I will be able to tell at once if it made such an improvement I’m hoping for so no need to go have it re-tuned unless it really makes a difference.

Did you mean the link to Piper in the UK or the link to my contact in Japan for the Tomei cams?

Originally Posted by EVOVII_SWE

Check your PMs Chris.