More then likely 3k is where his turbo spools. My car also feels slow until about 3,800 rpms then the turbo is at about 28psi. It goes from 80hps to 300+ in just 1k rpm. The intake plumbing to the turbo actually creates a restriction in the intake when not in boost.

 

maby it will help with a crane 12/14?

 

I think turbo grind comes in crane #12. Should help it spool. But the real gains come from the tune. On my most recent tune my car spooled 600rpms faster. Anti-lag I think is what they call it.

 

Have done som thinking. It seems, like the Indy is a good drag intake for upper rpm's. I think I will trye one on my NA engine
Ok, it loose a bit midrange, but on a dd who is rolling 20k on highway a year, its no big deal actually.

 

I hear you, I Ride Neon, have good gains using Indy, but, did you do a porting job on the exhaust side?

 

I dont recall what head was on it. But I think when I ran it back at the neon meet it still had the stock neon head. Later was upgraded to a magnum with the exhaust ported. I used a long tube header with a straight flow exhaust. There were a lot of little upgrades I did to this motor that I learned from experience over the years that have helped out also. Keep in mind this was a 2nd gen indy so it had no 90 degree throttle body. I also had to use a 2nd gen TB, sensors, and starter for it to fit. This car didnt stay together long. I built it to beat the hell out of and it really didn't like it. The head fell apart first. Get a DOHC if you plan to rev the **** out of it. My DOHC's never had come apart from revving it high, Lost 2 stock sohc heads around 8-9k rpms. This was like 7 years ago now.

 

I have the dohc pcm monted on it, and I can say that rewing past 7000 rpm is no good in my present tuning. I'm going to do some porting on the exhaust side

 

Interesting. What pistons you got? any head decking?

 

I have it decked.030" + 3 angle valvejob, so the cr are around 10.2 I think. Stock pistons.
It ist that my engine wont rew past 7000 rpm, but it become more noisy, so I'm not rewing that high after that. The sohc dont make power that high anyway. Well you say rewing 8-9000 rpm, haha, that will not ever hapen under my bonnet, so the Indy is not any more on my priority list.


But I,m in love with the Thermal muffler from Modern, and cant decide if I go for 2.25 our 2.5 piping. My original twin tip has badly rusted on the intake flange. I have a unused 2.25" universal cat, so I would probably go for the 304 stainless 2.25" piping from Mandrel Bendt Exhaust + a Thermal. Lovely piece of stainless steel both of them.
But do you thing a 2.25" tubing wil mess up the benefits of a LTH?
If it does that, I will go for 2.5" tubing?

 

Indy makes power from what 5k and up? Shifting at 7k rpms wont drop below 5k. I would just get the 2.5" and be done with it, stock is 2.25". But from what I understand you wont get much of a benefit over the 2.25", but it leaves room for further mods. My car spun in first and would bounce of the limiter, so I never seen anything under 5k when racing it.