Link for my turbo gze. Is it the right option?

[~SlideWays~]

Ive got a early ae92 gze with a T28. Problem is it is using heaps of fuel (250km on a tank) and is very laggy. (no surprise but I think it should be better).

It has been suggested by a few people that I just ditch the afm and std ecu and go for aftermarket. I have no experience with Link but know a few cars running LEM.

I would like to use the tvis setup (already using the manifold minus butterflies) which should help with bottom end and lag. But the gze ecu doesn't have the output.

Instead of using a stand alone rev switch and spending money on dyno time to try get the afm tuned (if that is even the fueling problem). I have been thinking maybe it would be best in the long run to install a LEM.

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What I would like to know is:

- Can the LEM be tuned well enough for efficiency as well as max torque and hp.

- Are there enough outputs on the (non-plus) Link for rev switch (for tvis) as well as high and low boost switch and anything else I may need.

- Is the link loom a complete replacement for the standard engine loom? (If it is then I could sell off the complete loom and ecu for a few bob).

- Is it even worth going aftermarket or should I persever with the Std ECU and AFM.

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Car is intended for weekend track use as well as daily. Gotta have something to beat the rest of the family!

[~SlideWays~]

Pro's and Con's off the top of my head:

Pro's:
- Optimum power (factory ecu isn't going to be tuned for 15psi is it).
- Fix fuel problem.
- No restrictive AFM.
- Clean up engine bay and random wires that dont do anything anymore.
- Could have high and low boost switch
- Output for rev switch to run tvis and better spooling and low end torque.
- Might be able to sell complete engine loom and ecu for some money back.


Cons:
- Cost at least $1300 to $3k
- Dyno time can vary hugely (unknown cost)
- Standard Link might not have enough outputs for rev switch, boost switch etc etc.
- Cost.
- Cost.
- Gf will be pissed that the holiday is pushed back lol

[Mr Revhead]

http://www.link-electro.co.nz/link_engine_management.html

may help.....


i think dyno time is less of a factor than you are thinking..... it sounds like it needs a dyno tune anyway..... and the results will more than make up for it

[IH8TEC]

ok, with my setup, basically i can get 350km at the most, but on average i'm gettign about 275-300 cruising round town, even less when the extra injector is working above 8psi. i find when i do nail it every now and again, i notice the fuel consumption (not sure how you drive) and the afm by the sounds of it is less restrictive than you think. i have fiddled with my afm so it runs richer as well though.

just my impressions of it. i seems to be getting alot more kms though now, since i've had it all running really well.

up to you what you decide, want power, gotta sacrifice some fuel economy remember

[evil_si]

you can get a brand new link for under $1000, but then there is the fitting and tuning.
dyno tuning upto $1000, road tuining on average is $300, fitting varies with electricians.

in my opinion an aftermarket ecu is the way to go, much more capabilites, and get it setup just how you want.

it comes with its own loom, but has no plugs on the engine end, you or who ever wires it up will have to either source them or cut your original ones off your loom,
from memery its about 18 wires, not a lot involved in wiring it up either,

tuning, you can get it road or dyno tuned depends on who you use and your budget

ive had a few cars road tuned with link and microtec computers and never had any trouble.

[~SlideWays~]

Thanks for the replies.

Hmmm IH8TEC yours sounds very similar to mine. Im wondering if the factory ecu is passed its limits for boost that high and maybe I could get some better economy out of a link?

It funny talking about economy with 'high' boost engines.... but im sure it can be better than 250k. My other gze with 11psi of s/c astmatic boost gets over 450k per tank easy.

I have run 14psi on my old t25g and now only 9.5psi on the t28 and the economy is exactly the same.

[IH8TEC]

more flow though?, i dont mind it really, i just tend to run 6-8psi everyday and get 350km, to be honest i never got over 400km with the s/c on there either

you had it on the dyno to see what your a/f is like at cruising speed load etc?

mine runs quite rich i must admit, will try fix that when i next have it on the dyno, adjust where the afm is set. wont be for acouple of months though, otherwise i'd let you know.

the link probably would get you better fuel economy when cruising. but when you boost, you get lots of power, and use lots of gas, viscous cycle

[~SlideWays~]

Nope haven't had it on a dyno to check the A/F readings yet.

I dont run an O2 sensor either, which I get conflicting info about.

Im after cruising economy atm because I drive the car every day, well I used to, and would often not even use boost very often and it still guzzled.

Yeah the new turbo should flow better It pulls just as hard as the t25g did with 5 psi less boost hehe

I dont care how much fuel it uses on boost, its worth it. Its just a liabilty it if isn't economical while off boost.


Maybe a 3rd car for economy is in order (2 weekend cars...ae86 s/c for saturday and turbo ae92 for sunday?)

[Leon]

That's what I was about to suggest. If this is your commuter car, then it will be more efficient to simply buy a EE90 Corolla and get about a million km out of a tank of 91.

However, if you want some power to play with on the way to work, then go the Link.

[Adamal]

THA SHZ had a Link in his 4AGTE FX, maybe you could ask him? Although he's running a T25.

[EVLGTZ]

Hmm im getting 400km city driving on daily boost setting 1 bar and up to 500km on the open road.
and yes with aftermarket ecu (link)

made a huge difference to both power and fuel economy

[~SlideWays~]

Hmm im getting 400km city driving on daily boost setting 1 bar and up to 500km on the open road.
and yes with aftermarket ecu (link)

made a huge difference to both power and fuel economy

Thats what I want to hear!

You've put bluetop cams in yours aswell haven't you? Also I think the top end difference with yours will have been a bigger increase vs an afm gze since the MAPs have got that god damn 5500rpm thing.

Are you running a link or link plus?

*evils my other car*

[EVLGTZ]

yeah do run bluetop cams and its plain old link LEMV4

[1598cc]

go aftermarket. more peice of mind for higher boost and you will definatly get better fuel economy if tuned correctly.

on my gtz turbo id get around 350k's to a full tank raping it ... thats with 2 extra injectors and 18-20psi of boost. also a afm setup.