kin quick

iTrader: (2)

Thanks for the reply Andy, I get really worried about it going bang, especially as I'm almost a home owner and will be skint for the rest of my life If it goes bang now, then it will be off the road for months and months while I save up for a rebuild! (just call me a woman.....most people do )

RLE

iTrader: (2)

If I'm wanting to order the 18g with the relevant pipes for the newage (at the Scoobyshop price) do I just need to ring your mobile Andy or should I wait for "business hours" after the weekend?

frayz

iTrader: (7)

Andy, what would you recomend for the 18g on a V7 sti?

Is it worth funning a FMIC or should o go with a larger TMIC?

Cheers

Frayz

RLE

iTrader: (2)

Frayz...........I asked the same question. Andy said the sti TMIC was good for 400 bhp so thats good enough for me as I wont be going any further with the car now.

HTH

frayz

iTrader: (7)

I too have previously heard that but the stock cooler is quite restrictive imo and the temps get too high if you wanna run 1.5/1.6bar so id be looking to change it just so the engine makes its power with less effort.

Unless Andy can explain otherwise. Cheers anyway though mate

Mo

Might be worth trying something like the APS TMIC to compare temps like for like with the STi TMIC

frayz

iTrader: (7)

Yeah cheers Mo, might just do that

Floyd

iTrader: (9)

I've found that the later STi TMIC (V7 onwards) to be very good with temps but not so with boost above 1.3/4 bar. There have been several reports of the TMIC's splitting with too much boost.

F

Mo

I think that's luck of the draw Floyd, I've been putting 1.5bar through mine for 20k now with no issues <touches wood>

911

My Sti v8 @ 1.5 bar was fine, sold on to a fellow modder and all ok there too.
Graham

Davey P

iTrader: (1)

The STI TMIC are better than the APS TMIC.

frayz

iTrader: (7)

Any proof/evedence to back that up mate?

Interested as to how you can say that when its clearly an upgrade

WRX_Rich

iTrader: (5)

I was also told this after I paid for the dam thing, im not to sure about the mapping etc but because they are soo big mine took an age to cool down after it got hot

i will say I didnt seem to gain anything on a rolling road compared to simular spec cars with sti tm's on a rolling road ( but oviously the bigger tmic will have a bigger effect on the road)

but no one can say they don't get an a* from engine tarts

frayz

iTrader: (7)

Can anyone else shed some light on this????

Davey P

iTrader: (1)

That's just from what I have read on the Internet and having listened to people in the know.
Just because it's an upgrade it doesn't make it any better than the orgional item.

Mo

Davey, this isn't a dig at you personally so please take it in the context it's meant but it's this that causes so much misinformation on these boards, perhaps Frayz would like to comment once he's conducted the comparison with data to substantiate his findings.

frayz

iTrader: (7)

Dave, i'll be logging the car with a laptop and additional temp probes.

I'll tell you exactly what happens in the real world and what doesnt.

I appreciate your comments regarding "just because its an upgrade doesnt make it better" but like you say yourself "its only from what youve read on the internet"

I'll give you the real world data and leave you to make up you own mind

Mo-

I'll post my results when they happen

Floyd

iTrader: (9)

I’ve done tests with the STi8 TMIC and measured the temps but it only applies to my mods – air box segregation, bigger scoop, undertray sealing etc. The temps rose at idle/standstill but would fall to within 2-3 degrees of ambient within about 200 meters. Temps were really well controlled on track too.

F

marklemac

I bought an APS TMIC and it was basically a big mistake. I should have gone for a FMIC straight away, but I couldn't stretch the funds..

Had it remapped and it made no difference on the dyno. The heat however was crazy, the tmic was RED hot...

Anyhow, I eventually sold it (after the major price drop from APS), and got the APS 725DR and haven't looked back since.

So, stay with the STI TMIC unless your going to go FMIC...

Davey P

iTrader: (1)

I see what your saying chap. I don't listen to the noraml people on these forums, more the technical peeps, e.g. the "respected mappers" and "respected tuners".

frayz

iTrader: (7)

Davey P

Just giving you an update.

It appears you were quite correct regarding the APS topmounted cooler. Its very very poor indeed. Much worse than an STI 8 cooler.

Ambients of 14 deg c showed the following results on a JDM STI 8

Startup and idle for 2 min.

Stock cooler showed 2 deg above ambient
APS cooler showed 10-12 deg above ambient

Crusing at 50mph

Stock cooler showed ambient temps within half a degree
APS cooler showed 12 - 14 deg above ambient.

Underload in 5th/6th gear at motorway speeds and above

Stock cooler showed a maximum of 38 deg
APS cooler didnt drop below 40deg at anytime and rose rapidly above 50deg to the point the accelerator was backed off. The APS cooler would not drop below 40deg at anytime under any driving style once the engine was warm.

These results were logged on 2 different data units, one was observed on a nomad ACT gauge.

The other was logged direct from the ecu via laptop and thermocouple.

How anyone can sell this as an upgrade is beyond beleif. A custom front mount is in the making

I will keep you all updated as to my findings

RLE

iTrader: (2)

very interesting Frayz...........good to see documented comparisons.

Davey P

iTrader: (1)

Sorry to hear all didn't go as planned
FMIC is the way to go, espically in this weather, I just wish I had one fitted to my car.

Defiantly worth referencing back to this page when other users are thinking of changing there TMIC.



Dave

frayz

iTrader: (7)

I think people should be made aware of these facts and not just the sales pitch they get from the vendor.

I dont do pub talk and numbers, i like facts and propper testing.

Thanks for keeping with me guys whist we did the research for ourselves

WRX_Rich

iTrader: (5)

glad some one did some testing .... bit better than blimey thats still hot

marklemac

oh and I forgot to add the APS TMIC weighs a tonne !

frayz

iTrader: (7)

Cos the end tanks are cast mate and the heatsoak is just massive, i dare say their frontmounts are good but their topmount is the biggest pile of poo ive come across in a long while...

Shame really... lol

jh1141

Hi guys sorry to butt in on this thread, up untill reading this thread i was ordering a ihi vf34, after what you are all saying the td05-18g sounds a better option. Cant seem to find a conclusive answer which turbo is best to go for??? HELP PLEASE!!!!!

RLE

iTrader: (2)

butt away mate.............

I can only speak as I find and after starting this thread I was in truth no nearer coming to a decision between the 18G and 20G.

I dont know what your mods are but I ditched the VF35 in favour of the 18G. Good mid range punch which pulls a lot harder to the red line and spool appears to be in line with my old set up (more or less).

I still wonder what the 20G would have been like but the respected tuners that I asked for advice all suggested the 18G for a road use car. All in all I'm pretty happy.

Mother Theresa

I swapped my VF35 (very similar to your VF34) for a TD05-18G, albeit with some supporting mods, and the difference is HUGE.