From Gruppe-S to ACE club sport 400 headers

[86MLR]

Yeah the air box is fine IRT flow, but from my experience the cats stifle the flow, alot, removing both cats removes the restrictions, by alot.

Full decat and good DT tune will surprise many.

[Lantanafrs2]

Imo the idea is to get a decent header and tune to make the car more enjoyable. Real gains are available without spending a lot of money. Big money should be spent on forced induction, not chasing 5 horsepower

[Ultramaroon]

...or wheels

[86MLR]

Originally Posted by Lantanafrs2

Imo the idea is to get a decent header and tune to make the car more enjoyable. Real gains are available without spending a lot of money. Big money should be spent on forced induction, not chasing 5 horsepower

In the end I had pulled 198hp from a 2017 OEM decated header and OEM decated exhaust, and the only bit that remained from spending money on a Tomei header, a Ultrex overpipe and a X force catless front pipe and cat back, was........ the $90 Ultrex overpipe.

Hell, it still had a OEM paper filter.

The only reason I now have a 2.5" system is because turbo.

I did recoup some coin from selling the Tomei and XForce to some kid who was all "torque dip" "boxer rumble" "powerers"...and stuff.

These are waiting quietly for the car fund nest egg to grow for injectors, fuel pump, clutch and maybe flex, maybe, not alot of E85 around these parts.

I was like, "yeah, this is what you need man".

Am I a bad man?

[tomm.brz]

you are a bad man untill you not provide a base to confront with
198hp starting from what?
those 198hp can be 198hp at that day in your dyno, and 210 in another dyno and 187 in another dyno... who cares then if you dony have something to honestly compare is just a random number with no value

[86MLR]

Originally Posted by tomm.brz

you are a bad man untill you not provide a base to confront with
198hp starting from what?
those 198hp can be 198hp at that day in your dyno, and 210 in another dyno and 187 in another dyno... who cares then if you dony have something to honestly compare is just a random number with no value

OK, I made additional 33 killerwasps on the day

Or 44 hp

My journey of wasted money > http://www.ft86club.com/forums/showthread.php?t=133311

[86MLR]

Because original base line vs AVO turbo at 8 psi with 2.5" overpipe, resonated front pipe and OEM catback.

Why, because spending a couple of thousand dollars on NA mods is a waste of money.

Also I highly recommend Paul Fisher at Pulse Racing in Menai, NSW.

The care and time they take to get things perfect, plus their unbelievable after sales service is amazing.

https://pulseracing.com.au/toyota-86...ance-packages/

https://www.facebook.com/PulseRacingWorkshop/

[Dave-ROR]

Originally Posted by churchx

On LHD you should be safe to get A350. As for tune, for Ace headers i suggest to get DT tune (ecutek). Ace headers doesn't show up that much gains (which probably were reason to buy those headers in first place) with OTS tunes, hence suggestion to go for DT tunes. Buy it, install, send logs back, they will tweak/release update revision(-s) and you should be ok. Most probably result will be much better with DT tune, despite "not local"/"remotely", then with some local tuner that hasn't spent that much time to get specific tune for these headers right (dyno time & tuner's time costs, a lot). There might be competent tuners around locally, i don't want to belittle anyone, but they simply won't have as much experience to dial specifically these and you won't have budget for them to replicate those hundreds of dyno runs and month(-s?) of fine-tuning tune to get result on par with DT's.

I would have gone with DT as well.. except for having a track only non-street legal car doesn't really make remote tuning all that easy

[PulsarBeeerz]

Our cars show better gains on Dyno Dynamics than Dynojets for some reason..Seen massive gains on that style of dyno often. Maybe it's the tuners.��

[Lantanafrs2]

You can show some gains by 4th gear baselines and 5th gear post tune.

[949 Racing]

A few updates, since our dyno plots are being discussed. We always do a baseline at 100% stock when possible. Always the same dyno. Always the same tire pressure. Always SAE corrected with same smoothing.

Blub was a healthy engine, made 172whp after three back to back pulls on CA91. ACE350 header made good power. Fitted a JDL header hoping for gains past 7200 and saw a mild improvement. No gain in peak power but less drop off after 7200. I scrutinized the datalogs and noticed a left over OEM control strategy that reduced power past 7200rpm. Suggested a small change, it worked. Now only minimal drop off on the top end. We sold our ACE350 header and stayed with the JDL.

As a tuner myself, I spent a lot of time looking at datalogs. I have tuned dozens of our MX5 street and multi championship winning race cars mostly on Megasquirt. Tuned our ND MX5 with Ecutek. We asked William to make many small changes to our maps to improve driveability, linearity and response. He was eager to work with us, trading logs back and forth. I never did any tuning on the 86, just looking at tables, data logs and driving. He tells me that most of those changes we requested became standard in all his 86 tunes. I imagine those are trade secrets now so I won't share any further detail. Too many other shops copying IP I know for sure that other 86 tuners aren't doing End result from DT is a true motorsports level tune right out of the box. Really happy with how Blub is working.

Also, almost no difference between 4th and 5th gear pulls on a Dynojet if you let the dyno resync for gear ratio. Like 1-2whp which is within the "noise" of regular readings. We do our pulls in 4th.

[PulsarBeeerz]

Originally Posted by 949 Racing

A few updates, since our dyno plots are being discussed. We always do a baseline at 100% stock when possible. Always the same dyno. Always the same tire pressure. Always SAE corrected with same smoothing.

Blub was a healthy engine, made 172whp after three back to back pulls on CA91. ACE350 header made good power. Fitted a JDL header hoping for gains past 7200 and saw a mild improvement. No gain in peak power but less drop off after 7200. I scrutinized the datalogs and noticed a left over OEM control strategy that reduced power past 7200rpm. Suggested a small change, it worked. Now only minimal drop off on the top end. We sold our ACE350 header and stayed with the JDL.

Can you throw up the dyno of the JDL? I could only find the ACE dynos in the build thread.

[JIM THEO]

Still searching for independent dyno graphs with DT-ACE headers that replicate what DT claims, the only one from justynco is quite conservative and although has very good power/torque curves in midrange, imho doesn't worth the money they ask especially if you pay for extra corrections until fine tuned:



More realistic figures from known tuners:
https://www.gt86.org.uk/forums/forum...aru-brz-build/

and again:
https://www.gt86.org.uk/forums/forum...otorsport-hfc/

[tomm.brz]

Originally Posted by 949 Racing

A few updates, since our dyno plots are being discussed. We always do a baseline at 100% stock when possible. Always the same dyno. Always the same tire pressure. Always SAE corrected with same smoothing.

Blub was a healthy engine, made 172whp after three back to back pulls on CA91. ACE350 header made good power. Fitted a JDL header hoping for gains past 7200 and saw a mild improvement. No gain in peak power but less drop off after 7200. I scrutinized the datalogs and noticed a left over OEM control strategy that reduced power past 7200rpm. Suggested a small change, it worked. Now only minimal drop off on the top end. We sold our ACE350 header and stayed with the JDL.

As a tuner myself, I spent a lot of time looking at datalogs. I have tuned dozens of our MX5 street and multi championship winning race cars mostly on Megasquirt. Tuned our ND MX5 with Ecutek. We asked William to make many small changes to our maps to improve driveability, linearity and response. He was eager to work with us, trading logs back and forth. I never did any tuning on the 86, just looking at tables, data logs and driving. He tells me that most of those changes we requested became standard in all his 86 tunes. I imagine those are trade secrets now so I won't share any further detail. Too many other shops copying IP I know for sure that other 86 tuners aren't doing End result from DT is a true motorsports level tune right out of the box. Really happy with how Blub is working.

Also, almost no difference between 4th and 5th gear pulls on a Dynojet if you let the dyno resync for gear ratio. Like 1-2whp which is within the "noise" of regular readings. We do our pulls in 4th.

actually, yes your dyno was being discussed, but in a good way
it seems very realiable and trustable... we were talking "bad" about certain other dyno pulls, at least I speak for me