Normally I'd fix this with a little AE, or ramp spark. I tried both. AE didn't make a difference. Spark made it worse. Any ideas?

even if I'm standing over the engine with the car in park, and I snap the throttle a little it will pop a nice fireball through the intake.

This car has a cc-306 cam and is 10.1:1 with a miniram, and 58mm tb, Super-8d version3 with VE mods to get BLM as close as possible, some inj constant changes, and I have the fans set so the coolant should never go over 200f or so. (185 thermostat).

It idles between like 75-79kpa, which seems a little bit much to me (would think it would be in the 60s). I adjusted valves like 5 times. They are not tight.

Anyway, heres a screen shot of an example. Pretty much, the second the TPS goes from 0 to something higher than say 10%, I get a POP, then the car pulls.

Any ideas?

-- Joe

 

That's definitely AE, in my book. But you probably have a super free flowing intake duct/filter, right? It's a very difficult problem to overcome. If I were you, I'd really fudge (increase dramatically) the VE in the lower RPM, high loads, to see if it gets better. And get as much dTPS AE in as quickly as possible without screwing it up too much elsewhere. Also decrease the AE decay, to make it last a little longer.

 

You might also want to decrease the AE decay.

 

How far is your MAP from the plenum?
Is it a soft line or a hard material hose?
Could be some delay in there.

 

Hi,

Map is connected with like a 2" hard line to the center of the manifold. It shares a 3/8" vac port with the FPR, which is also connected with hard line.

-- Joe

 

Which table would you recommend? I tried adding a ton to the "accel enrich delta pw factor vs coolant", with no change. Maybe i'm editing the wrong table?

See attached image, which tables would you try editing with?

On $58 (what i've been using for 5 years now) there is only 4 AE tables, and the one two that have the biggest impact were "accel enrich vs tps" and "accel enrich vs map".

-- Joe

 

From what I've read, a little more AE won't do it with a MR.
More like 150% to 200%

 

Hate to do this to you..
But in the sticky...
https://www.thirdgen.org/forums/diy-...e-thing-i.html
Might try the AE map multiplier tables. There are several ways to cover the transition in $8D.
Here is a nice post on the different ways to play with it. Specifically on TBI but the theories apply.
https://www.thirdgen.org/forums/diy-...=accell+enrich

 

Hey,

A little more not enough? Okie. I'll double it. This is a brand new motor, so I dont have a baseline tune i'm starting fresh with super-aujp, which I picked since a lot of folks raved about it.

--Joe

 

I was reading that. I'm not sure if the map table is going to help, because the map change isn't really that great. Maybe 10kpa swing either way, But I'll try it along with the delta tps table. What do you think? I guess if as Funstick says, the delta tps table makes the biggest "global change" i'll try that first.

The AE is a little less comprex on the $58 masks I'm used to. Oh well.


-- Joe

 

That's where I think the multipliers will help.
Can make a small change look bigger in the range you want it.

 

Do you have a way to give the MAP signal its own port? Aftermarket regulators are usually not air tight at all and can mess with your tuning a lot. You could test it by disconnecting and plugging the regulator, and reducing the fuel pressure down to whatever runs smoothest, and see what your MAP reads.