So picked my95 sti ra up today after having it fitted with a simtek Ecu and mapped with supporting mods that were fitted, some prior and some at garage

List of mods are

Walbro 255
Phase 2 440's
Apexi power intake (resonator delete)
My99 map sensor
Fully deccatted system
New age coils

Still on standard turbo and tmic

Below is a pic of the graph I was given,

Now I was quite surprised it only made this figure, I'm not for chasing figures but considering the expense of the Ecu and supporting mods should I be quite disappointed it only made this amount, there is an improvement on torque but to end up with the same bhp as standard seems a pointless exercise in fitting all these uprated parts,

I questioned if there was a reason it didn't do better and was told the turbo would restrict it with whatever parts were fitted so seems maybe a waste of time if this is the case,

Can anyone shed some light on the advantages of the simtek to say for instance the esl daughterboard,
I'm running maffless now but so does the esl, it's been fitted with a temp sensor but isn't running duel maps etc which I have heard is a feature, are there any other advantages

I look forward to all your opinions
Regards

 

If thats a TD04 thats about right....

Some people have seen nearly 300, but depends on the mods and condition of the turbo etc,

 

The Simtek ECU, though excellent, can only work with what it's got, and to be honest in this case it hasn't got much. A bigger turbo and injectors to match would make quite a difference and the ECU would start to earn its keep.

 

I'm not after huge figures to be honest as I want to keep 5 speed etc, a little bit more would be nice, thought 440's would see me right, may look into different turbo and fmic in future, so is the consensus that simtek maybe unneeded for my requirements

 

What more did you expect on a slanty top mount?

 

Should be a td05 16g as standard on that.
I'd of been expecting close to 300 on the standard top mount,drops like a rock after its peaked as though something's holding it back.
Perhaps a collapsed silencer or something?

Tim

 

i had 315bhp on a classic wagon on a td05 with slanty top mount. would have expected you to crack 300 at least. this was with 440 yellows also.

 

I thought the STI had a TD05? If so and its in in good nick they are capable of making over 340.
With a FMIC adjustable FPR on a fresh build mine was making 317 before the standard coil packs started breaking down. I hoping to get near 350 on the next session. 96 sti type ra.

<iframe width="420" height="315" src="https://www.youtube.com/embed/NRDcsuCycks" frameborder="0" allowfullscreen></iframe>

 

Who/where mapped it?

Top mount would help matters, but, should have made more power than that IMO.

Has it actually still got the TD05 fitted?

 

Td05 is what the mapper said it had and to my knowledge hasn't been changed and what came on the car from factory
Powerstation mapped it, have used other mappers In past on other cars but are notoriously hard to get hold of these days so thought would try someone else,
I thought too it would make more even with tmic and td05, I'm not saying it's wrong hence the post and asking for opinions just seems quite low, like other people say it's more on the lines of is something holding it back etc

 

Does seem poor.

My STI V2 RA made 301bhp with exhaust, panel filter and a chip on the stock ecu. That was on Zen's dyno.

Isn't that less than standard power?

 

Yes slightly less than standard hence my concerns with all the uprated parts, can't see the turbo being this restrictive as what I was told by the garage,

 

Well, no.. In that case why do they make 280 standard!

The td05 is good for 320bhp or so with supporting mods, so to say the turbo is the restriction is strange.

You sure someone hasn't fitted a td04? Mind you, certainly doesn't look like a td04 graph.

 

To my knowledge it has a tdo5 and see no reason why it would be anything else, of I was told it was mapped conservatively to preserve the engine etc I would of understood but the reason was the turbo won't give any more with any amount of modification, as mentioned I too thought the td05 was capable of more, more than standard power anyhow, I know my tmic is restrictive as well but not at this level surely!!!

 

It does seem abit low. But you have to remember its a 20 year old engine. All engines lose power over time.

 

Been reading this thread..

I think you will find the V2 impreza STI had 260 BHP standard... It was not till the V3-4 that they produced 275 BHP stock then 280 BHP for the last of the classics.

My 93 RA is a similar spec to yours.. 440cc injectors ,full de cat , GEMS Ecu ..which is very similar to the Simtek.

It originally made 279BHP on the first remap on the slanty top mount intercooler. I was disappointed with that . The TD05 16G is capable of 330Bhp with a more efficient intercooler. The slanty ones are struggling around the 300bhp mark.. any reputable Subaru specialist will tell you that.

I fitted a front mount and had it remapped by Bob Rawle and it now makes 320BHP 300 Ft/lb torque.

Remember a lot is down to the mapper. Bob Rawle commented on how conservative the timing settings were on the first map... the car was so much better after his map..

No reason your car wont make 320-330 with a better intercooler if the turbo and engine is ok and mapper is good. !

 

It does seem a fair bit under powered but as said above the phase 1 (slanty) tmic is the least efficient tmic on the impreza range .

I'd say that a esl daughter board would be a downgrade to your current ecu ,especially if you have the software upgraded to the alcertek version

The early sti's with Tdo5 16g's can make good power with a fmic . my v1 sti made 347hp @1.2 bar running apexi fc/power intake, hdi fmic, 440's, full decat and h&s upipe




Clive attowe said it would have made a bit more if I did a newage coil pack conversion (spark blew out @ 1.3 bar and above) and fitted bigger injectors (hit 92% induity)

I'd say a bigger tmic or fmic would see a better result than changing ecu's

 

Slightly different set up, but I made 331 with a VF34, full de-cat and standard V3 STI top mount and silicone intake.

Point being if I were you I'd be looking to change the turbo and top mount, something like the VF34 or 28 or a hybrid TD04 like the SC32 and the later classic STI topmounts make decent power for very little money, 330bhp makes for a pretty quick Classic, and doesn't break the bank or the gearbox.

 

V2 sti was 275ps, which became 280ps for the V3 cars. It does seem like you have a restriction somewhere holding the car back, the spec should have seen a healthy 300bhp.

 

As banny says v2 STI is 275ps stock,it's only the v1 which has 260ps.
300ps should be easily achievable on your car and a TD05 will not stop you from getting to this figure.
@savage bulldogs,in what way is ESL a downgrade from simtek/alcatek?
Hardware Feature List (Not Exhaustive):ESL
 Live, on the fly, engine running, per-value mapping
 Low cost (GBP295/USD450)
 Suitable for all turbocharged Imprezas
 Only option for Legacy RSB/GTB
 Only option for AT Forester
 MAF or MAFless load calculation
 User Switchable Maps (Full, not offsets)
 Closed Loop Knock Control
 Closed Loop Idle and Fuel
 Injector overrun cut off
 Factory drive quality out of the box
 Comprehensive closed loop knock control
 3D boost mapping - no boost controller required
 Can be remapped to incorporate further modification
 Full OEM Diagnostic control codes
 International dealer support network
 Standard hot and cold start compensations.
 Closed loop narrowband lambda control (idle and light cruise)
 No additional harness
 Installation Service available
 Motorsport features to follow: ALS, LC, Flat Shift
 All Sensors and actuators exposed, will work with any specification

 

It also has the newage coil pack conversion, I suppose for now I will just have to speculate why it is running conservative power and just enjoy it until if and when I decide to go fmic and perhaps turbo,
If I was let's say use a different mapper would I need to get some sort of code from the ecu to unlock it for a different mapper to do there work
Regards

 

Fmic is over kill for that level, rule of thumb is 400bhp before fmic, and that level of power will kill your gearbox. Decent fmic £200+ Classic STI top mount 60 quid and is more than capable of delivering 350bhp, which is pretty much going to be the limit of your gearbox.

 

I'm unsure how many of those options you've pasted up for esl wouldn't be on a simtek ecu upgraded to alcatek tbh ?

Im not a 100% sure but i think if alcatek can run a wide band as well ?

Tbh I don't know a great deal about alcatek and they seem to sell for more second hand so assumed they were a bit better .I know higher price doesn't always indicate better quality but surely there's a reason for it ?

I did run mafless esl in my forged v3 uk and it always seemed to run a bit rich. once the intake temp sensor was fitted he could trim the fuel a bit finer on the second map tweek but I don't think the closed knock correction levels liked my noisy race spec Mahle pistons, as it seemed to keep adjusting the map and drowning the power with fuel .

The same engine now runs better mpg and power on the apexi in the v1 (only difference is the phase 1.5 to phase 1 inlets) than it did in the esl'd v3.

Sorry to the op for filling your thread up with my opinions and im not saying that there's anything wrong with esl ,it just didn't seem to like my noisy pistons 😉

I'm unsure of tmic upgrade path for the phase 1 inlet set up as the throttle body is longer you might have to modify somthing to make a later classic or newage tmic to fit . I'm aiming for 400hp so just went for a fmic

 

I'm very interested in seeing under bonnet pics of a v1v2 with a new age cooler. I did consider this mod but was concerned the small bonnet scoop would restrict flow. Not to mention intake temps.

 

Version 1



< Not remapped.

 

350bhp on a classic tmic? What total nonsense..

 

why is it nonsense? my p1 made 346bhp on the standard topmount

 

I'm not saying its not possible its not advisable hence why people change to fmic on a classic way before 350bhp let alone the 400bhp he quoted.

 

The P1 doesn't use the early restrictive slanty top mount though.

You'll never get a newage top mount to fit an early car and even fitting a later classic top mount to an early car is a complete ball ache. And besides, if aiming for 350bhp then a front mount is a far better option than any top mount imo.

 

I still find those figures hard to believe even after all these years on here. Was that on a 16G Micky ???