20g 50trim spool up characteristics

[DSM90AWD]

Here's the time slips I said I would post.

I note that 1/8 mile MPH is missing from your slips, does your track offer this?

Not to doubt you (slips don't lie), but your Dyno Sheet reads 278WHP and says your car weighs 3500#. Mathmatically, the chances of that combination producing a 7.525 1/8 mile ET is nil on a regulation NHRA/IHRA track.

Hell my car is 3300# and my 1/4 mile MPH (111.9) equates to ~350WHP and my 1/8 mile was only 7.9 WTF

I know your're only asking for spool advice on other turbos, but think that if you are truely not close to maxing out the EVOIII 16G may want to stick with it especially since you Auto-X

 

[90AWDTalon]

I note that 1/8 mile MPH is missing from your slips, does your track offer this?

Not to doubt you (slips don't lie), but your Dyno Sheet reads 278WHP and says your car weighs 3500#. Mathmatically, the chances of that combination producing a 7.525 1/8 mile ET is nil on a regulation NHRA/IHRA track.

Hell my car is 3300# and my 1/4 mile MPH (111.9) equates to ~350WHP and my 1/8 mile was only 7.9 WTF

I know your're only asking for spool advice on other turbos, but think that if you are truely not close to maxing out the EVOIII 16G may want to stick with it especially since you Auto-X

They don't offer MPH, those dyno's read really really low. I don't know where the 3500 pounds came from, my car is 3350 with me in it and a full tank of gas. I'm positive I've maxed the turbo out with out going to cams, smim, or leaded race gas, all of which I don't think will get that 1/2 second reduction I'm looking for. And are also way out of my budget, just like the guy who said to get differentials. If I had that kind of money to mess around with I'd build my talon to just drag and have fun on the street with and build a turbo Mata or something for autoX. I'm waiting to find a good deal on something used and then sell the evoIII to cover most of the cost. My car will never be competitive at autoX with out spending thousands and thousands of dollars on suspension and diff's. I'm just looking to have fun. As long as there isn't tons of lag I will have fun. From the responses on the 50 trims I don't think spool is going to be a big problem on the autoX course. I'd also like to hear about the holset and 20g, they can also be found at the price range I'm looking at and seem to be a little bit more available. Any ways thanks for all the replies.


EDIT:
Just had another thought. Lets say just for argument sake that the track is a little shy of a true 1/8 mile, and maybe on a "regulation track" I'd be more in the 7.7-7.8 range. How much would be left in the evoIII? Not enough for another 1/2 second. I appreciate the help, but I know what I'm doing and if for some reason I don't like how the new turbo performs on the autoX course and I don't meet my 1/8 mile goals. I can sell it and get another evoIII. If I cant find a good used turbo for less than $500 I'm not going to do it.

 

[Steve93Talon]

Considering that it shows a "Portatree timing system" on your slip, I'd have to guess that you'd run substantially slower on a real tree. You'd be amazed how much you'll gain with cams and race gas. 50whp shouldn't be a problem. And then if you do decide to get a bigger turbo later, you'll have an engine that can flow enough to support it at high RPMs.

 

[DSM90AWD]

You'd be amazed how much you'll gain with cams and race gas. 50whp shouldn't be a problem.

Just to add.. Big turbos real benefit is to flow more air in the upper RPMs where smaller turbos can't hang and the stock cams (1990s more so) severly limit the airflow >6K.

FYI.. my car (granted it's now a 50-trim) gained 5MPH in the 1/4 mile (106-111.9)with the addition of FP2s (same exact setup/22psi on 93ocatane) which equates to ~54WHP gain.

 

[90AWDTalon]

I'm only going to add one more comment to this argument, it's obvious that no matter what I say or show proof of your just going to make an excuse for why it can't be. I have no idea why you two are fighting it so hard, or why you insist on continuing to bring up cams and tell me to stick with my current turbo. I have stated a more than once that is not an option. I'm not some newb that doesn't know what he is doing, I've gone against the advice of what most dsmtuners say, with great success more than once. I'm not scared to do it again. This reminds me a lot of when I got my MAFT, everyone was saying "don't upgrade until you over run your stock maft." Thankfully I didn't listen, I did that mod with just a catback, upper intercooler pipe, and boost controller. It made a huge difference even though my stock maf wasn't maxed out. So the point of that little story is that a part doesn't need to be maxed out before a performance gain can be realized. Now that would be an argument for the turbo swap if you guys are right, but that is not what I believe. I know that my turbo is near maxed out if not maxed out on pump gas. I'm absolutely positive that I can't reach my goals on this turbo without running race gas, swapping cams, probably SMIM, and substantial weight reduction. While I cant guarantee that I'll reach these goals with the turbo's I'm looking at, I believe that it will be alot more likely. I'm not scared to find out for myself, especially knowing that it wont happen on my current turbo.

Now for my last defense of my times, there are 6 brackets, they are as follows:
bracket 1: slower that 10.00
Bracket 2: 9.00 - 9.99
Bracket 3: 8.00 - 8.99
Bracket 4: 7.5 - 7.99
Bracket 5: 7.00 - 7.49
Bracket 6: Quicker than 6.99

Brackets 1 and 2 are where most cars fall, bracket 3 mostly street driven modified muscle cars, second event I attended there was a modified 2nd gen that was running an 18g in this bracket. Also at this second event was a C6 corvette, I believe stock but cant guarantee. He was in bracket 3, if you look up the stock time for this car on Car and Driver it is 12.7, which would put him in this bracket. I only heard one of his times and it was an 8.3xx. Bracket 4, this is where I am. Aside from myself, all slick tired muscle cars, about half driven to the track and then changed wheels, the other half trailered in. Some looked as if they could be driven on the street others where obviously purpose built drag cars. Bracket 5, most if not all tubed out slick tired trailered in purpose built drag cars. Bracket 6, out of two events I've attended there have only been 3 cars each in this bracket. One that I got a good look at was a tubed '60's vette with a big block and three stages of nitrous, this is the car that ran the 6.616 against me. I'm not going to say that this track is a 100% accurate 1/8 mile, but I think that it is close enough for argument sake.

Now please if anyone has anything to say about spool up characteristics please do.

 

[DSM90AWD]

Now please if anyone has anything to say about spool up characteristics please do.

No offense, but you've opened up two recent threads that sound unbelievable. One that says you run 47lbs/min on a 16G and one that has you running mid-11s in a 3300# car with 278WHP.

I only supplemented your query as it seemed something was definitely wrong. Kinda like treating a patient for a papercut when he has a knife sticking outta his head.

Now onto your query. There are hundreds of past threads on spoolup characteristics of 20Gs / 50-Trims and nearly as many directly comparing the two so why not just SEARCH

 

[90AWDTalon]

There are hundreds of past threads on spoolup characteristics of 20Gs / 50-Trims and nearly as many directly comparing the two so why not just SEARCH

Because all anyone talks about is when full boost is reached.

 

[leet]

Let's stay on topic, gentlemen..